code: public static boolean isXBEL(final String path) {
          if (path == null) {
              return false;
          }
          if (path.endsWith(XBEL_EXTENSION)) {
              return true;
          }
          return false;
      }
docs: Returns {@code true} if {@code path} ends with
  {@value PathConstants#XBEL_EXTENSION}, {@code false} otherwise.
  
  @param path {@link String} path
  @return boolean