code: public Observable<Tag> createTagAsync(UUID projectId, String name, CreateTagOptionalParameter createTagOptionalParameter) {
          return createTagWithServiceResponseAsync(projectId, name, createTagOptionalParameter).map(new Func1<ServiceResponse<Tag>, Tag>() {
              @Override
              public Tag call(ServiceResponse<Tag> response) {
                  return response.body();
              }
          });
      }
docs: Create a tag for the project.
  
  @param projectId The project id
  @param name The tag name
  @param createTagOptionalParameter 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 Tag object