code: public boolean contentOfEquals(Map<String, Object> one, Object two) {
          if (one == null) {
              return two == null;
          } else {
              return one.equals(two);
          }
      }
docs: Determines whether map one's content matches two.
  @param one map the check content of.
  @param two other map to check.
  @return true if both maps are equal.