public static List<ParseTree> findAllNodes(ParseTree t, int index, boolean findTokens) {
		List<ParseTree> nodes = new ArrayList<ParseTree>();
		_findAllNodes(t, index, findTokens, nodes);
		return nodes;
	}
Return true if t is u's parent or a node on path to root from u.
 Use == not equals().

 @since 4.5.1
runtime/Java/src/org/antlr/v4/runtime/tree/Trees.java