docs: public Observable<List<EntityRole>> getEntityRolesAsync(UUID appId, String versionId, UUID entityId) {
          return getEntityRolesWithServiceResponseAsync(appId, versionId, entityId).map(new Func1<ServiceResponse<List<EntityRole>>, List<EntityRole>>() {
              @Override
              public List<EntityRole> call(ServiceResponse<List<EntityRole>> response) {
                  return response.body();
              }
          });
      }