Compare {@code pattern} matched as rule {@code patternRuleIndex} against
{@code tree} and return a {@link ParseTreeMatch} object that contains the
matched elements, or the node at which the match failed.
ParseTreeMatchmatch(ParseTree tree, string pattern, int patternRuleIndex)
Compare {@code pattern} matched as rule {@code patternRuleIndex} against {@code tree} and return a {@link ParseTreeMatch} object that contains the matched elements, or the node at which the match failed.