private void parseJoin(String join, ArrayList<Varnode> res) {
		join = join.substring(5);
		String[] split = join.split(" ");
		for (String piece : split) {
			ArrayList<Varnode> onePiece = parseStore(piece);
			res.add(onePiece.get(0));
		}
	}
Obtain a specific CompilerSpec given a language id
@param langId is the 5 long colon separated language id
Ghidra/Test/IntegrationTest/src/test.slow/java/ghidra/program/model/lang/AbstractProtoModelTest.java