pause method
Pause the current playback.
An exception is thrown if the player is not in the "playing" state.
Example:
await myPlayer.pausePlayer();
Implementation
Future<void> pause() async {
_logger.d('FS:---> pausePlayer ');
await _lock.synchronized(() async {
await _pausePlayer();
});
_logger.d('FS:<--- pausePlayer ');
}