protected function getBuffer(): TokenBuffer
    {
        if (null === $this->buffer) {
            $this->buffer = TokenBuffer::factory();
        }
        return $this->buffer;
    }
protected function getBuffer(): TokenBuffer
    {
        if (null === $this->buffer) {
            $this->buffer = TokenBuffer::factory();
        }
        return $this->buffer;
    }
protected function getBuffer ( ) : TokenBuffer { if ( null === $ this -> buffer ) { $ this -> buffer = TokenBuffer :: factory ( ) ; } return $ this -> buffer ; }
Returns token buffer.

@return TokenBuffer
Returns token buffer .