public function warn($message, $throwable = null) {
		$this->log(LoggerLevel::getLevelWarn(), $message, $throwable);
	}
public function warn($message, $throwable = null) {
		$this->log(LoggerLevel::getLevelWarn(), $message, $throwable);
	}
public function warn ( $ message , $ throwable = null ) { $ this -> log ( LoggerLevel :: getLevelWarn ( ) , $ message , $ throwable ) ; }
Log a message with the WARN level.

@param mixed $message message
@param Exception $throwable Optional throwable information to include
in the logging event.
Log a message with the WARN level .