Return the name owner asynchronously.
| this |
An Bus. |
| name |
Name. |
| timeout_msec |
The timeout in milliseconds or -1 to use the default timeout. |
| cancellable |
A Cancellable or null. |
| callback |
A TaskReadyCallback to call when the request is satisfied or null if you don't care about the result of the method invocation. |
| user_data |
The data to pass to callback. |