public function getOutput(String $file=null):Array 
    {
        $file = ($file)?$file:$this->_logFile;
        if (file_exists($file)) {
            return file($file);
        }
        throw new \RunTimeException("file not found!");
    }
public function getOutput(String $file=null):Array 
    {
        $file = ($file)?$file:$this->_logFile;
        if (file_exists($file)) {
            return file($file);
        }
        throw new \RunTimeException("file not found!");
    }
public function getOutput ( String $ file = null ) : Array { $ file = ( $ file ) ? $ file : $ this -> _logFile ; if ( file_exists ( $ file ) ) { return file ( $ file ) ; } throw new \ RunTimeException ( "file not found!" ) ; }
end kill method
end kill method