[ Version ( since = "1.12" ) ]
public async bool transfer (Cancellable? cancellable) throws Error
Asynchronously joins all active and held calls, and disconnects from them.
When the operation is finished, callback will be invoked in the thread-default main loop of the thread you are
calling this method from. You can then call transfer.end to get the result of the operation.
See transfer_sync for the synchronous, blocking version of this method.
| this |
A ModemVoice. |
| cancellable |
A Cancellable or |
| callback |
A TaskReadyCallback to call when the request is satisfied or |
| user_data |
User data to pass to |