Don't forget BaseBox

activitystreams-derive/src/lib.rs

@@ -205,6 +205,14 @@ pub fn ref_derive(input: TokenStream) -> TokenStream {
                 Default::default()
             }
         }
+
+        impl std::convert::TryFrom<#name> for BaseBox {
+            type Error = std::io::Error;
+
+            fn try_from(s: #name) -> Result<Self, Self::Error> {
+                BaseBox::from_concrete(s)
+            }
+        }
     };
     let trait_impls: proc_macro2::TokenStream = input
         .attrs

src/activity/types.rs

@@ -27,7 +27,7 @@ use crate::{
         properties::{ApObjectProperties, ObjectProperties},
         Object, ObjectBox,
     },
-    Base, Extensible, PropRefs,
+    Base, BaseBox, Extensible, PropRefs,
 };
 
 /// Indicates that the actor accepts the object.

src/actor/types.rs

@@ -24,7 +24,7 @@ use crate::{
         properties::{ApObjectProperties, ObjectProperties},
         Object, ObjectBox,
     },
-    Base, Extensible, PropRefs,
+    Base, BaseBox, Extensible, PropRefs,
 };
 
 /// Describes a software application.

src/collection/types.rs

@@ -28,7 +28,7 @@ use crate::{
         properties::{ApObjectProperties, ObjectProperties},
         Object, ObjectBox,
     },
-    Base, Extensible, PropRefs,
+    Base, BaseBox, Extensible, PropRefs,
 };
 
 /// The default `Collection` type.

src/link/types.rs

@@ -20,7 +20,7 @@
 use crate::{
     ext::Ext,
     link::{kind::*, properties::*, Link, LinkBox},
-    Base, PropRefs,
+    Base, BaseBox, PropRefs,
 };
 
 #[cfg(feature = "types")]

src/object/types.rs

@@ -20,7 +20,7 @@
 use crate::{
     ext::Ext,
     object::{kind::*, properties::*, Object, ObjectBox},
-    Base, Extensible, PropRefs,
+    Base, BaseBox, Extensible, PropRefs,
 };
 
 /// Represents any kind of multi-paragraph written work.