docs: public static boolean isVarArg(List<? extends XtendParameter> params) {
  		assert params != null;
  		if (params.size() > 0) {
  			final XtendParameter param = params.get(params.size() - 1);
  			assert param != null;
  			return param.isVarArg();
  		}
  		return false;
  	}