[ Version ( since = "0.11.6" ) ]
public void add_handler_capability (string token)
Add one capability token to this client, as if via add_handler_capabilities.
This method may only be called before register is called, and may only be called on objects whose class implements handle_channels.
| this |
a client, which must not have been registered with register yet |
| token |
a capability token as defined by the Telepathy D-Bus API Specification |