Synchronously calls method with params on the remote peer.
This function will not wait or expect a reply from the peer.
If params is floating then the reference is consumed.
| this |
A Client |
| method |
The name of the method to call |
| cancellable |
A Cancellable or null |
| params |
A [struct@GLib.Variant] of parameters or null |
|
true on success; otherwise false and throws is set. |