protected function setFilename($filename) {
        if (false === realpath($filename)) {
            throw new FileNotFoundException(sprintf("The file \"%s\" was not found", $filename));
        }
        $this->filename = realpath($filename);
        return $this;
    }
protected function setFilename($filename) {
        if (false === realpath($filename)) {
            throw new FileNotFoundException(sprintf("The file \"%s\" was not found", $filename));
        }
        $this->filename = realpath($filename);
        return $this;
    }
protected function setFilename ( $ filename ) { if ( false === realpath ( $ filename ) ) { throw new FileNotFoundException ( sprintf ( "The file \"%s\" was not found" , $ filename ) ) ; } $ this -> filename = realpath ( $ filename ) ; return $ this ; }
Set the filename.

@param string $filename The filename.
@return QuoteProvider Returns this quote provider.
@throws FileNotFoundException Throws a file not found exception.
Set the filename .