protected override Boolean OnToken(CssToken token)
            {
                if (token.Type != CssTokenType.RoundBracketClose || _selector._state != State.Data)
                {
                    _selector.Apply(token);
                    return(false);
                }

                return(true);
            }
            Boolean OnAfter(CssToken token)
            {
                if (token.Type != CssTokenType.RoundBracketClose || _nested._state != State.Data)
                {
                    _nested.Apply(token);
                    return(false);
                }

                return(true);
            }