Add extension traits

activitystreams-derive/src/lib.rs

@@ -96,10 +96,8 @@ pub fn unit_string(input: TokenStream) -> TokenStream {
                 .map(|segment| {
                     let segment = segment.into_value();
                     segment.ident == Ident::new("activitystreams", segment.ident.span())
-                })
-                .unwrap_or(false)
-        })
-        .unwrap()
+                }).unwrap_or(false)
+        }).unwrap()
         .clone();
 
     let value = from_value(attr);
@@ -169,14 +167,14 @@ pub fn unit_string(input: TokenStream) -> TokenStream {
 }
 
 fn from_value(attr: Attribute) -> String {
-    let group = attr.tts
+    let group = attr
+        .tts
         .clone()
         .into_iter()
         .filter_map(|token_tree| match token_tree {
             TokenTree::Group(group) => Some(group),
             _ => None,
-        })
-        .next()
+        }).next()
         .unwrap();
 
     group
@@ -186,8 +184,7 @@ fn from_value(attr: Attribute) -> String {
         .filter_map(|token_tree| match token_tree {
             TokenTree::Term(term) => Some(term.as_str().to_owned()),
             _ => None,
-        })
-        .next()
+        }).next()
         .unwrap()
 }
 
@@ -608,14 +605,14 @@ pub fn properties_derive(input: TokenStream) -> TokenStream {
 }
 
 fn variants(attr: Attribute) -> Vec<(String, bool)> {
-    let group = attr.tts
+    let group = attr
+        .tts
         .clone()
         .into_iter()
         .filter_map(|token_tree| match token_tree {
             TokenTree::Group(group) => Some(group),
             _ => None,
-        })
-        .next()
+        }).next()
         .unwrap();
 
     let mut is_concrete = false;
@@ -636,20 +633,19 @@ fn variants(attr: Attribute) -> Vec<(String, bool)> {
                 },
             )),
             _ => None,
-        })
-        .flat_map(|i| i)
+        }).flat_map(|i| i)
         .collect()
 }
 
 fn is_functional(attr: Attribute) -> bool {
-    let group = attr.tts
+    let group = attr
+        .tts
         .clone()
         .into_iter()
         .filter_map(|token_tree| match token_tree {
             TokenTree::Group(group) => Some(group),
             _ => None,
-        })
-        .next()
+        }).next()
         .unwrap();
 
     group

activitystreams-types/src/activity/accept.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::AcceptType, properties::{AcceptProperties, ActivityProperties},
+    kind::AcceptType,
+    properties::{AcceptProperties, ActivityExt, ActivityProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor accepts the object.
 ///
@@ -48,4 +49,22 @@ pub struct Accept {
 }
 
 impl Object for Accept {}
+impl ObjectExt for Accept {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Accept {}
+impl ActivityExt for Accept {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/add.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::AddType, properties::{ActivityProperties, AddProperties},
+    kind::AddType,
+    properties::{ActivityExt, ActivityProperties, AddProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor has added the object to the target.
 ///
@@ -49,4 +50,22 @@ pub struct Add {
 }
 
 impl Object for Add {}
+impl ObjectExt for Add {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Add {}
+impl ActivityExt for Add {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/amove.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::MoveType, properties::{ActivityProperties, MoveProperties},
+    kind::MoveType,
+    properties::{ActivityExt, ActivityProperties, MoveProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor has moved object from origin to target.
 ///
@@ -47,4 +48,22 @@ pub struct AMove {
 }
 
 impl Object for AMove {}
+impl ObjectExt for AMove {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for AMove {}
+impl ActivityExt for AMove {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/announce.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::AnnounceType, properties::{ActivityProperties, AnnounceProperties},
+    kind::AnnounceType,
+    properties::{ActivityExt, ActivityProperties, AnnounceProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor is calling the target's attention the object.
 ///
@@ -47,4 +48,22 @@ pub struct Announce {
 }
 
 impl Object for Announce {}
+impl ObjectExt for Announce {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Announce {}
+impl ActivityExt for Announce {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/arrive.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, IntransitiveActivity, Object};
 
 use super::{
-    kind::ArriveType, properties::{ActivityProperties, ArriveProperties},
+    kind::ArriveType,
+    properties::{ActivityExt, ActivityProperties, ArriveProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// An IntransitiveActivity that indicates that the actor has arrived at the location.
 ///
@@ -48,5 +49,23 @@ pub struct Arrive {
 }
 
 impl Object for Arrive {}
+impl ObjectExt for Arrive {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Arrive {}
 impl IntransitiveActivity for Arrive {}
+impl ActivityExt for Arrive {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/block.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::BlockType, properties::{ActivityProperties, BlockProperties},
+    kind::BlockType,
+    properties::{ActivityExt, ActivityProperties, BlockProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor is blocking the object.
 ///
@@ -49,4 +50,22 @@ pub struct Block {
 }
 
 impl Object for Block {}
+impl ObjectExt for Block {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Block {}
+impl ActivityExt for Block {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/create.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::CreateType, properties::{ActivityProperties, CreateProperties},
+    kind::CreateType,
+    properties::{ActivityExt, ActivityProperties, CreateProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor has created the object.
 #[derive(Clone, Debug, Default, Deserialize, Serialize, Properties)]
@@ -45,4 +46,22 @@ pub struct Create {
 }
 
 impl Object for Create {}
+impl ObjectExt for Create {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Create {}
+impl ActivityExt for Create {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/delete.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::DeleteType, properties::{ActivityProperties, DeleteProperties},
+    kind::DeleteType,
+    properties::{ActivityExt, ActivityProperties, DeleteProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor has deleted the object.
 ///
@@ -47,4 +48,22 @@ pub struct Delete {
 }
 
 impl Object for Delete {}
+impl ObjectExt for Delete {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Delete {}
+impl ActivityExt for Delete {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/dislike.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::DislikeType, properties::{ActivityProperties, DislikeProperties},
+    kind::DislikeType,
+    properties::{ActivityExt, ActivityProperties, DislikeProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor dislikes the object.
 #[derive(Clone, Debug, Default, Deserialize, Serialize, Properties)]
@@ -45,4 +46,22 @@ pub struct Dislike {
 }
 
 impl Object for Dislike {}
+impl ObjectExt for Dislike {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Dislike {}
+impl ActivityExt for Dislike {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/flag.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::FlagType, properties::{ActivityProperties, FlagProperties},
+    kind::FlagType,
+    properties::{ActivityExt, ActivityProperties, FlagProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor is "flagging" the object.
 ///
@@ -48,4 +49,22 @@ pub struct Flag {
 }
 
 impl Object for Flag {}
+impl ObjectExt for Flag {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Flag {}
+impl ActivityExt for Flag {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/follow.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::FollowType, properties::{ActivityProperties, FollowProperties},
+    kind::FollowType,
+    properties::{ActivityExt, ActivityProperties, FollowProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor is "following" the object.
 ///
@@ -49,4 +50,22 @@ pub struct Follow {
 }
 
 impl Object for Follow {}
+impl ObjectExt for Follow {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Follow {}
+impl ActivityExt for Follow {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/ignore.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::IgnoreType, properties::{ActivityProperties, IgnoreProperties},
+    kind::IgnoreType,
+    properties::{ActivityExt, ActivityProperties, IgnoreProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor is ignoring the object.
 ///
@@ -47,4 +48,22 @@ pub struct Ignore {
 }
 
 impl Object for Ignore {}
+impl ObjectExt for Ignore {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Ignore {}
+impl ActivityExt for Ignore {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/invite.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::InviteType, properties::{ActivityProperties, InviteProperties},
+    kind::InviteType,
+    properties::{ActivityExt, ActivityProperties, InviteProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// A specialization of Offer in which the actor is extending an invitation for the object to the
 /// target.
@@ -46,4 +47,22 @@ pub struct Invite {
 }
 
 impl Object for Invite {}
+impl ObjectExt for Invite {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Invite {}
+impl ActivityExt for Invite {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/join.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::JoinType, properties::{ActivityProperties, JoinProperties},
+    kind::JoinType,
+    properties::{ActivityExt, ActivityProperties, JoinProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor has joined the object.
 ///
@@ -47,4 +48,22 @@ pub struct Join {
 }
 
 impl Object for Join {}
+impl ObjectExt for Join {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Join {}
+impl ActivityExt for Join {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/leave.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::LeaveType, properties::{ActivityProperties, LeaveProperties},
+    kind::LeaveType,
+    properties::{ActivityExt, ActivityProperties, LeaveProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor has left the object.
 ///
@@ -47,4 +48,22 @@ pub struct Leave {
 }
 
 impl Object for Leave {}
+impl ObjectExt for Leave {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Leave {}
+impl ActivityExt for Leave {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/like.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::LikeType, properties::{ActivityProperties, LikeProperties},
+    kind::LikeType,
+    properties::{ActivityExt, ActivityProperties, LikeProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor likes, recommends or endorses the object.
 ///
@@ -47,4 +48,22 @@ pub struct Like {
 }
 
 impl Object for Like {}
+impl ObjectExt for Like {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Like {}
+impl ActivityExt for Like {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/listen.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::ListenType, properties::{ActivityProperties, ListenProperties},
+    kind::ListenType,
+    properties::{ActivityExt, ActivityProperties, ListenProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor has listened to the object.
 #[derive(Clone, Debug, Default, Deserialize, Serialize, Properties)]
@@ -45,4 +46,22 @@ pub struct Listen {
 }
 
 impl Object for Listen {}
+impl ObjectExt for Listen {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Listen {}
+impl ActivityExt for Listen {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/offer.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::OfferType, properties::{ActivityProperties, OfferProperties},
+    kind::OfferType,
+    properties::{ActivityExt, ActivityProperties, OfferProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor is offering the object.
 ///
@@ -47,4 +48,22 @@ pub struct Offer {
 }
 
 impl Object for Offer {}
+impl ObjectExt for Offer {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Offer {}
+impl ActivityExt for Offer {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/properties.rs

@@ -56,9 +56,14 @@
 //! # fn main() {}
 //! ```
 
-use activitystreams_traits::{Link, Object};
+use activitystreams_traits::{Activity, Link, Object};
 use serde_json;
 
+pub trait ActivityExt: Activity {
+    fn props(&self) -> &ActivityProperties;
+    fn props_mut(&mut self) -> &mut ActivityProperties;
+}
+
 /// Activity objects are specializations of the base Object type that provide information about
 /// actions that have either already occurred, are in the process of occurring, or may occur in the
 /// future.

activitystreams-types/src/activity/question.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, IntransitiveActivity, Object};
 
 use super::{
-    kind::QuestionType, properties::{ActivityProperties, QuestionProperties},
+    kind::QuestionType,
+    properties::{ActivityExt, ActivityProperties, QuestionProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Represents a question being asked.
 ///
@@ -52,5 +53,23 @@ pub struct Question {
 }
 
 impl Object for Question {}
+impl ObjectExt for Question {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Question {}
+impl ActivityExt for Question {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}
 impl IntransitiveActivity for Question {}

activitystreams-types/src/activity/read.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::ReadType, properties::{ActivityProperties, ReadProperties},
+    kind::ReadType,
+    properties::{ActivityExt, ActivityProperties, ReadProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor has read the object.
 #[derive(Clone, Debug, Default, Deserialize, Serialize, Properties)]
@@ -45,4 +46,22 @@ pub struct Read {
 }
 
 impl Object for Read {}
+impl ObjectExt for Read {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Read {}
+impl ActivityExt for Read {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/reject.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::RejectType, properties::{ActivityProperties, RejectProperties},
+    kind::RejectType,
+    properties::{ActivityExt, ActivityProperties, RejectProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor is rejecting the object.
 ///
@@ -47,4 +48,22 @@ pub struct Reject {
 }
 
 impl Object for Reject {}
+impl ObjectExt for Reject {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Reject {}
+impl ActivityExt for Reject {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/remove.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::RemoveType, properties::{ActivityProperties, RemoveProperties},
+    kind::RemoveType,
+    properties::{ActivityExt, ActivityProperties, RemoveProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor is removing the object.
 ///
@@ -47,4 +48,22 @@ pub struct Remove {
 }
 
 impl Object for Remove {}
+impl ObjectExt for Remove {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Remove {}
+impl ActivityExt for Remove {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/tentative_accept.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::TentativeAcceptType, properties::{ActivityProperties, TentativeAcceptProperties},
+    kind::TentativeAcceptType,
+    properties::{ActivityExt, ActivityProperties, TentativeAcceptProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// A specialization of Accept indicating that the acceptance is tentative.
 #[derive(Clone, Debug, Default, Deserialize, Serialize, Properties)]
@@ -45,4 +46,22 @@ pub struct TentativeAccept {
 }
 
 impl Object for TentativeAccept {}
+impl ObjectExt for TentativeAccept {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for TentativeAccept {}
+impl ActivityExt for TentativeAccept {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/tentative_reject.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::TentativeRejectType, properties::{ActivityProperties, TentativeRejectProperties},
+    kind::TentativeRejectType,
+    properties::{ActivityExt, ActivityProperties, TentativeRejectProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// A specialization of Reject in which the rejection is considered tentative.
 #[derive(Clone, Debug, Default, Deserialize, Serialize, Properties)]
@@ -45,4 +46,22 @@ pub struct TentativeReject {
 }
 
 impl Object for TentativeReject {}
+impl ObjectExt for TentativeReject {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for TentativeReject {}
+impl ActivityExt for TentativeReject {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/travel.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, IntransitiveActivity, Object};
 
 use super::{
-    kind::TravelType, properties::{ActivityProperties, TravelProperties},
+    kind::TravelType,
+    properties::{ActivityExt, ActivityProperties, TravelProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor is traveling to target from origin.
 ///
@@ -48,5 +49,23 @@ pub struct Travel {
 }
 
 impl Object for Travel {}
+impl ObjectExt for Travel {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Travel {}
+impl ActivityExt for Travel {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}
 impl IntransitiveActivity for Travel {}

activitystreams-types/src/activity/undo.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::UndoType, properties::{ActivityProperties, UndoProperties},
+    kind::UndoType,
+    properties::{ActivityExt, ActivityProperties, UndoProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor is undoing the object.
 ///
@@ -51,4 +52,22 @@ pub struct Undo {
 }
 
 impl Object for Undo {}
+impl ObjectExt for Undo {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Undo {}
+impl ActivityExt for Undo {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/update.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::UpdateType, properties::{ActivityProperties, UpdateProperties},
+    kind::UpdateType,
+    properties::{ActivityExt, ActivityProperties, UpdateProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor has updated the object.
 ///
@@ -50,4 +51,22 @@ pub struct Update {
 }
 
 impl Object for Update {}
+impl ObjectExt for Update {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for Update {}
+impl ActivityExt for Update {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/activity/view.rs

@@ -20,9 +20,10 @@
 use activitystreams_traits::{Activity, Object};
 
 use super::{
-    kind::ViewType, properties::{ActivityProperties, ViewProperties},
+    kind::ViewType,
+    properties::{ActivityExt, ActivityProperties, ViewProperties},
 };
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 /// Indicates that the actor has viewed the object.
 #[derive(Clone, Debug, Default, Deserialize, Serialize, Properties)]
@@ -45,4 +46,22 @@ pub struct View {
 }
 
 impl Object for View {}
+impl ObjectExt for View {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Activity for View {}
+impl ActivityExt for View {
+    fn props(&self) -> &ActivityProperties {
+        &self.activity_props
+    }
+
+    fn props_mut(&mut self) -> &mut ActivityProperties {
+        &mut self.activity_props
+    }
+}

activitystreams-types/src/actor/mod.rs

@@ -21,7 +21,7 @@
 
 use activitystreams_traits::{Actor, Object};
 
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 pub mod kind;
 use self::kind::*;
@@ -39,6 +39,15 @@ pub struct Application {
 }
 
 impl Object for Application {}
+impl ObjectExt for Application {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Actor for Application {}
 
 /// Represents a formal or informal collective of Actors.
@@ -54,6 +63,15 @@ pub struct Group {
 }
 
 impl Object for Group {}
+impl ObjectExt for Group {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Actor for Group {}
 
 /// Represents an organization.
@@ -69,6 +87,15 @@ pub struct Organization {
 }
 
 impl Object for Organization {}
+impl ObjectExt for Organization {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Actor for Organization {}
 
 /// Represents an individual person.
@@ -84,6 +111,15 @@ pub struct Person {
 }
 
 impl Object for Person {}
+impl ObjectExt for Person {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Actor for Person {}
 
 /// Represents a service of any kind.
@@ -99,4 +135,13 @@ pub struct Service {
 }
 
 impl Object for Service {}
+impl ObjectExt for Service {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Actor for Service {}

activitystreams-types/src/collection/mod.rs

@@ -21,7 +21,7 @@
 
 use activitystreams_traits::{Collection, CollectionPage, Object};
 
-use object::properties::ObjectProperties;
+use object::properties::{ObjectExt, ObjectProperties};
 
 pub mod kind;
 pub mod properties;
@@ -45,7 +45,25 @@ pub struct UnorderedCollection {
 }
 
 impl Object for UnorderedCollection {}
+impl ObjectExt for UnorderedCollection {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Collection for UnorderedCollection {}
+impl CollectionExt for UnorderedCollection {
+    fn props(&self) -> &CollectionProperties {
+        &self.collection_props
+    }
+
+    fn props_mut(&mut self) -> &mut CollectionProperties {
+        &mut self.collection_props
+    }
+}
 
 /// A subtype of `Collection` in which members of the logical collection are assumed to always be
 /// strictly ordered.
@@ -65,7 +83,25 @@ pub struct OrderedCollection {
 }
 
 impl Object for OrderedCollection {}
+impl ObjectExt for OrderedCollection {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Collection for OrderedCollection {}
+impl CollectionExt for OrderedCollection {
+    fn props(&self) -> &CollectionProperties {
+        &self.collection_props
+    }
+
+    fn props_mut(&mut self) -> &mut CollectionProperties {
+        &mut self.collection_props
+    }
+}
 
 /// Used to represent distinct subsets of items from a `Collection`.
 #[derive(Clone, Debug, Default, Deserialize, Serialize, Properties)]
@@ -88,8 +124,35 @@ pub struct UnorderedCollectionPage {
 }
 
 impl Object for UnorderedCollectionPage {}
+impl ObjectExt for UnorderedCollectionPage {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Collection for UnorderedCollectionPage {}
+impl CollectionExt for UnorderedCollectionPage {
+    fn props(&self) -> &CollectionProperties {
+        &self.collection_props
+    }
+
+    fn props_mut(&mut self) -> &mut CollectionProperties {
+        &mut self.collection_props
+    }
+}
 impl CollectionPage for UnorderedCollectionPage {}
+impl CollectionPageExt for UnorderedCollectionPage {
+    fn props(&self) -> &CollectionPageProperties {
+        &self.collection_page_props
+    }
+
+    fn props_mut(&mut self) -> &mut CollectionPageProperties {
+        &mut self.collection_page_props
+    }
+}
 
 /// Used to represent ordered subsets of items from an `OrderedCollection`.
 #[derive(Clone, Debug, Default, Deserialize, Serialize, Properties)]
@@ -116,5 +179,32 @@ pub struct OrderedCollectionPage {
 }
 
 impl Object for OrderedCollectionPage {}
+impl ObjectExt for OrderedCollectionPage {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 impl Collection for OrderedCollectionPage {}
+impl CollectionExt for OrderedCollectionPage {
+    fn props(&self) -> &CollectionProperties {
+        &self.collection_props
+    }
+
+    fn props_mut(&mut self) -> &mut CollectionProperties {
+        &mut self.collection_props
+    }
+}
 impl CollectionPage for OrderedCollectionPage {}
+impl CollectionPageExt for OrderedCollectionPage {
+    fn props(&self) -> &CollectionPageProperties {
+        &self.collection_page_props
+    }
+
+    fn props_mut(&mut self) -> &mut CollectionPageProperties {
+        &mut self.collection_page_props
+    }
+}

activitystreams-types/src/collection/properties.rs

@@ -59,6 +59,16 @@
 use activitystreams_traits::{Collection, CollectionPage, Link, Object};
 use serde_json;
 
+pub trait CollectionExt {
+    fn props(&self) -> &CollectionProperties;
+    fn props_mut(&mut self) -> &mut CollectionProperties;
+}
+
+pub trait CollectionPageExt {
+    fn props(&self) -> &CollectionPageProperties;
+    fn props_mut(&mut self) -> &mut CollectionPageProperties;
+}
+
 /// `Collection` objects are a specialization of the base `Object` that serve as a container for
 /// other `Objects` or `Links`.
 ///

activitystreams-types/src/custom_props.rs

@@ -21,8 +21,9 @@
 
 use serde::{de::DeserializeOwned, ser::Serialize};
 
-use activitystreams_traits::{Activity, Actor, Collection, CollectionPage, IntransitiveActivity,
-                             Link, Object};
+use activitystreams_traits::{
+    Activity, Actor, Collection, CollectionPage, IntransitiveActivity, Link, Object,
+};
 
 /// A custom type extending Link
 ///
@@ -127,23 +128,19 @@ impl<C, O> Collection for CustomObject<C, O>
 where
     C: DeserializeOwned + Serialize,
     O: Collection,
-{
-}
+{}
 impl<C, O> CollectionPage for CustomObject<C, O>
 where
     C: DeserializeOwned + Serialize,
     O: CollectionPage,
-{
-}
+{}
 impl<C, O> Activity for CustomObject<C, O>
 where
     C: DeserializeOwned + Serialize,
     O: Activity,
-{
-}
+{}
 impl<C, O> IntransitiveActivity for CustomObject<C, O>
 where
     C: DeserializeOwned + Serialize,
     O: IntransitiveActivity,
-{
-}
+{}

activitystreams-types/src/link/mod.rs

@@ -39,3 +39,12 @@ pub struct Mention {
 }
 
 impl Link for Mention {}
+impl LinkExt for Mention {
+    fn props(&self) -> &LinkProperties {
+        &self.link_props
+    }
+
+    fn props_mut(&mut self) -> &mut LinkProperties {
+        &mut self.link_props
+    }
+}

activitystreams-types/src/link/properties.rs

@@ -53,6 +53,11 @@ use activitystreams_traits::{Error, Link, Object, Result};
 use mime;
 use serde_json;
 
+pub trait LinkExt {
+    fn props(&self) -> &LinkProperties;
+    fn props_mut(&mut self) -> &mut LinkProperties;
+}
+
 /// Define all the properties of the Object base type as described by the Activity Streams
 /// vocabulary.
 ///

activitystreams-types/src/object/mod.rs

@@ -39,6 +39,15 @@ pub struct Article {
 }
 
 impl Object for Article {}
+impl ObjectExt for Article {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 
 /// Represents an audio document of any kind.
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
@@ -53,6 +62,15 @@ pub struct Audio {
 }
 
 impl Object for Audio {}
+impl ObjectExt for Audio {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 
 /// Represents a document of any kind.
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
@@ -67,6 +85,15 @@ pub struct Document {
 }
 
 impl Object for Document {}
+impl ObjectExt for Document {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 
 /// Represents any kind of event.
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
@@ -81,6 +108,15 @@ pub struct Event {
 }
 
 impl Object for Event {}
+impl ObjectExt for Event {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 
 /// An image document of any kind
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
@@ -95,6 +131,15 @@ pub struct Image {
 }
 
 impl Object for Image {}
+impl ObjectExt for Image {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 
 /// Represents a short written work typically less than a single paragraph in length.
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
@@ -109,6 +154,15 @@ pub struct Note {
 }
 
 impl Object for Note {}
+impl ObjectExt for Note {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 
 /// Represents a Web Page.
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
@@ -123,6 +177,15 @@ pub struct Page {
 }
 
 impl Object for Page {}
+impl ObjectExt for Page {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 
 /// Represents a logical or physical location.
 ///
@@ -158,6 +221,15 @@ pub struct Place {
 }
 
 impl Object for Place {}
+impl ObjectExt for Place {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 
 /// A Profile is a content object that describes another `Object`, typically used to describe
 /// `Actor` Type objects.
@@ -179,6 +251,15 @@ pub struct Profile {
 }
 
 impl Object for Profile {}
+impl ObjectExt for Profile {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 
 /// Describes a relationship between two individuals.
 ///
@@ -210,6 +291,15 @@ pub struct Relationship {
 }
 
 impl Object for Relationship {}
+impl ObjectExt for Relationship {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 
 /// A Tombstone represents a content object that has been deleted.
 ///
@@ -231,6 +321,15 @@ pub struct Tombstone {
 }
 
 impl Object for Tombstone {}
+impl ObjectExt for Tombstone {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}
 
 /// Represents a video document of any kind.
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
@@ -245,3 +344,12 @@ pub struct Video {
 }
 
 impl Object for Video {}
+impl ObjectExt for Video {
+    fn props(&self) -> &ObjectProperties {
+        &self.object_props
+    }
+
+    fn props_mut(&mut self) -> &mut ObjectProperties {
+        &mut self.object_props
+    }
+}

activitystreams-types/src/object/properties.rs

@@ -56,6 +56,11 @@ use serde_json;
 
 use object::Image;
 
+pub trait ObjectExt {
+    fn props(&self) -> &ObjectProperties;
+    fn props_mut(&mut self) -> &mut ObjectProperties;
+}
+
 /// Alias chrono::DateTime<Utc> for use in derive macros
 pub type UtcTime = DateTime<Utc>;
 

src/activity.rs

@@ -20,8 +20,10 @@
 //! Activity traits and types
 
 pub use activitystreams_traits::{Activity, IntransitiveActivity};
-pub use activitystreams_types::activity::{kind, properties, AMove, Accept, Add, Announce, Arrive,
-                                          Block, Create, Delete, Dislike, Flag, Follow, Ignore,
-                                          Invite, Join, Leave, Like, Listen, Offer, Question,
-                                          Read, Reject, Remove, TentativeAccept, TentativeReject,
-                                          Travel, Undo, Update, View};
+pub use activitystreams_types::activity::{
+    kind,
+    properties::{self, ActivityExt},
+    AMove, Accept, Add, Announce, Arrive, Block, Create, Delete, Dislike, Flag, Follow, Ignore,
+    Invite, Join, Leave, Like, Listen, Offer, Question, Read, Reject, Remove, TentativeAccept,
+    TentativeReject, Travel, Undo, Update, View,
+};

src/collection.rs

@@ -20,6 +20,8 @@
 //! Collection traits and types
 
 pub use activitystreams_traits::{Collection, CollectionPage};
-pub use activitystreams_types::collection::{kind, properties, OrderedCollection,
-                                            OrderedCollectionPage, UnorderedCollection,
-                                            UnorderedCollectionPage};
+pub use activitystreams_types::collection::{
+    kind,
+    properties::{self, CollectionExt, CollectionPageExt},
+    OrderedCollection, OrderedCollectionPage, UnorderedCollection, UnorderedCollectionPage,
+};

src/lib.rs

@@ -148,11 +148,11 @@ mod error;
 pub mod link;
 pub mod object;
 
-pub use self::activity::{Activity, IntransitiveActivity};
+pub use self::activity::{Activity, ActivityExt, IntransitiveActivity};
 pub use self::actor::Actor;
-pub use self::collection::{Collection, CollectionPage};
+pub use self::collection::{Collection, CollectionExt, CollectionPage, CollectionPageExt};
 pub use self::error::{Error, Result};
-pub use self::link::Link;
-pub use self::object::Object;
+pub use self::link::{Link, LinkExt};
+pub use self::object::{Object, ObjectExt};
 pub use activitystreams_traits::properties;
 pub use activitystreams_types::context;

src/link.rs

@@ -20,4 +20,8 @@
 //! Link traits and types
 
 pub use activitystreams_traits::Link;
-pub use activitystreams_types::link::{kind, properties, Mention};
+pub use activitystreams_types::link::{
+    kind,
+    properties::{self, LinkExt},
+    Mention,
+};

src/object.rs

@@ -20,5 +20,9 @@
 //! Object traits and types
 
 pub use activitystreams_traits::Object;
-pub use activitystreams_types::object::{kind, properties, Article, Audio, Document, Event, Image,
-                                        Note, Page, Place, Profile, Relationship, Tombstone, Video};
+pub use activitystreams_types::object::{
+    kind,
+    properties::{self, ObjectExt},
+    Article, Audio, Document, Event, Image, Note, Page, Place, Profile, Relationship, Tombstone,
+    Video,
+};