GstChildProxy interface for multi child element property access This interface provides a uniform way to access child objects of elements. There are methods to get the children and methods to (recursivly) set and get their properties. @parent: @Returns: @parent: @name: @Returns: @parent: @index: @Returns: @object: @name: @target: @pspec: @Returns: @object: @name: @value: @object: @first_property_name: @var_args: @object: @first_property_name: @Varargs: @object: @name: @value: @object: @first_property_name: @var_args: @object: @first_property_name: @Varargs: @object: @child: @object: @child: