close
Closes @connection. Note that this never causes the process to exit (this might only happen if the other end of a shared message bus connection disconnects, see #GDBusConnection:exit-on-close).
Once the connection is closed, operations such as sending a message will return with the error %G_IO_ERROR_CLOSED. Closing a connection will not automatically flush the connection so queued messages may be lost. Use g_dbus_connection_flush() if you need such guarantees.
If @connection is already closed, this method fails with %G_IO_ERROR_CLOSED.
When @connection has been closed, the #GDBusConnection::closed signal is emitted in the g-main-context-push-thread-default of the thread that @connection was constructed in.
This is an asynchronous method. When the operation is finished,
Since
2.26
Parameters
a #GCancellable or null
a #GAsyncReadyCallback to call when the request is satisfied or null if you don't care about the result