code: public boolean contains (Object value)
      {
          for (int ii = 0, nn = size(); ii < nn; ii++) {
              if (ObjectUtil.equals(value, _list[ii])) {
                  return true;
              }
          }
          return false;
      }
docs: Returns true if the supplied value is equal (using {@link
  Object#equals}) to any value in the list.