[ CCode ( has_target = false ) ]
public delegate void ContentDeserializeFunc (ContentDeserializer deserializer)
The type of a function that can be registered with content_register_deserializer.
When the function gets called to operate on content, it can call functions on the deserializer object to obtain the mime
type, input stream, user data, etc. for its operation.
| deserializer |
a `GdkContentDeserializer` |