code: public Observable<List<Tag>> getTagsAsync(UUID projectId, GetTagsOptionalParameter getTagsOptionalParameter) {
          return getTagsWithServiceResponseAsync(projectId, getTagsOptionalParameter).map(new Func1<ServiceResponse<List<Tag>>, List<Tag>>() {
              @Override
              public List<Tag> call(ServiceResponse<List<Tag>> response) {
                  return response.body();
              }
          });
      }
docs: Get the tags for a given project and iteration.
  
  @param projectId The project id
  @param getTagsOptionalParameter the object representing the optional parameters to be set before calling this API
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the List&lt;Tag&gt; object