code: public static String getMethodDesc(String methodName, String paramDesc) {
          if (paramDesc == null) {
              return String.format(METHOD_DESC_VOID, methodName);
          } else {
              return String.format(METHOD_DESC_PARAM, methodName, paramDesc);
          }
      }
docs: 获取方法的标示 : method_name + "(" + paramDesc + ")"
  
  @param
  @return