docs: @VisibleForTesting
      protected ProctorResult determineBucketsInternal(final TestType testType, final String identifier, final Map<String, Object> context) {
          final Map<String, Integer> forcedGroups = Collections.emptyMap();
          final Identifiers identifiers = new Identifiers(testType, identifier);
          return determineBucketsInternal(identifiers, context, forcedGroups);
      }