Emitted when a signal from the remote object and interface that proxy is for, has been received.
Since 2.72 this signal supports detailed connections. You can connect to the detailed signal `g-signal:GDBusProxy:x` in
order to receive callbacks only when signal `x` is received from the remote object.
| sender_name |
The sender of the signal or null if the connection is not a bus connection. |
| signal_name |
The name of the signal. |
| parameters |
A Variant tuple with parameters for the signal. |