public boolean isOptionalAcceptNullable() {
    return isOptionalType()
        && !typeKind.isOptionalSpecializedJdk()
        && containingType.isOptionalAcceptNullable();
  }
Marshaled name for compatibility with repository.
@return get JSON name either specified or default.
value-processor/src/org/immutables/value/processor/meta/ValueAttribute.java