code: public final boolean hasRequestValues (@Nonnull final Collection <String> aExpectedValues)
    {
      ValueEnforcer.notNull (aExpectedValues, "ExpectedValues");
  
      return EqualsHelper.equalsCollection (aExpectedValues, getRequestValues ());
    }
docs: Utility method that checks if the passed expected value matches the request
  parameter (considering the fallback mechanism)
  
  @param aExpectedValues
  The list of expected values. May not be <code>null</code>.
  @return <code>true</code> if the passed value equals the actual request
  value