public function keywords($keywords = [])
    {
        $args = func_get_args();

        $this->mergeKeywords = (is_bool(end($args)) || is_int(end($args))) ? array_pop($args) : false;

        $keywords = is_array($keywords) ? $keywords : $args;

        array_walk($keywords, function (&$value) {
            $value = is_object($value) ? get_class($value) : $value;
        });

        $this->keywords = array_unique($keywords);

        return $this;
    }
public function keywords($keywords = [])
    {
        $args = func_get_args();

        $this->mergeKeywords = (is_bool(end($args)) || is_int(end($args))) ? array_pop($args) : false;

        $keywords = is_array($keywords) ? $keywords : $args;

        array_walk($keywords, function (&$value) {
            $value = is_object($value) ? get_class($value) : $value;
        });

        $this->keywords = array_unique($keywords);

        return $this;
    }
public function keywords ( $ keywords = [ ] ) { $ args = func_get_args ( ) ; $ this -> mergeKeywords = ( is_bool ( end ( $ args ) ) || is_int ( end ( $ args ) ) ) ? array_pop ( $ args ) : false ; $ keywords = is_array ( $ keywords ) ? $ keywords : $ args ; array_walk ( $ keywords , function ( & $ value ) { $ value = is_object ( $ value ) ? get_class ( $ value ) : $ value ; } ) ; $ this -> keywords = array_unique ( $ keywords ) ; return $ this ; }
Fluently selects keywords.

@param  mixed $keywords
@return $this
Fluently selects keywords .