public function logo(string $logo = null)
    {
        if (\func_num_args() === 0) {
            return $this->logo;
        }

        $this->logo = $logo;

        return $this;
    }
public function logo(string $logo = null)
    {
        if (\func_num_args() === 0) {
            return $this->logo;
        }

        $this->logo = $logo;

        return $this;
    }
public function logo ( string $ logo = null ) { if ( \ func_num_args ( ) === 0 ) { return $ this -> logo ; } $ this -> logo = $ logo ; return $ this ; }
Sets or gets the ASCII art logo.

@param string|null $logo

@return string|self
Sets or gets the ASCII art logo .