src/Driver/Excel.php
public function source($filename = null)
    {
        if ($filename) {
            $this->source = $filename;

            return $this;
        }

        return $this->source ?? $this->config['source'];
    }
public function source($filename = null)
    {
        if ($filename) {
            $this->source = $filename;

            return $this;
        }

        return $this->source ?? $this->config['source'];
    }
public function source ( $ filename = null ) { if ( $ filename ) { $ this -> source = $ filename ; return $ this ; } return $ this -> source ?? $ this -> config [ 'source' ] ; }
{@inheritDoc}
{