private static Set<TypeConstraint> getExpectedTypeInfos(final CompletionParameters params) {
    Set<TypeConstraint> set = CollectionFactory.createCustomHashingStrategySet(EXPECTED_TYPE_INFO_STRATEGY);
    Collections.addAll(set, getExpectedTypes(params));
    return set;
  }
private static Set<TypeConstraint> getExpectedTypeInfos(final CompletionParameters params)