public function isOverlapping()
    {
        return $this->lockFile &&
            file_exists($this->lockFile) &&
            call_user_func($this->whenOverlapping, filemtime($this->lockFile)) === false;
    }
public function isOverlapping()
    {
        return $this->lockFile &&
            file_exists($this->lockFile) &&
            call_user_func($this->whenOverlapping, filemtime($this->lockFile)) === false;
    }
public function isOverlapping ( ) { return $ this -> lockFile && file_exists ( $ this -> lockFile ) && call_user_func ( $ this -> whenOverlapping , filemtime ( $ this -> lockFile ) ) === false ; }
Check if the Job is overlapping.

@return bool
Check if the Job is overlapping .