code: private static boolean failedEquivalenceCheck(
        EquivalenceMatch eqMatch, EquivalenceMethod eqMethod) {
      return eqMatch == EquivalenceMatch.VALUE_MISMATCH
          || (eqMatch == EquivalenceMatch.NO_KEY_MATCH && eqMethod != EquivalenceMethod.INVARIANT);
    }
docs: Determines if the specified EquivalenceMatch is considered a failing
  condition for an equivalence check, given the EquivalenceMethod used for
  the check.