code: public Observable<ServiceResponse<List<Tag>>> getTagsWithServiceResponseAsync(UUID projectId, GetTagsOptionalParameter getTagsOptionalParameter) {
          if (projectId == null) {
              throw new IllegalArgumentException("Parameter projectId is required and cannot be null.");
          }
          if (this.client.apiKey() == null) {
              throw new IllegalArgumentException("Parameter this.client.apiKey() is required and cannot be null.");
          }
          final UUID iterationId = getTagsOptionalParameter != null ? getTagsOptionalParameter.iterationId() : null;
  
          return getTagsWithServiceResponseAsync(projectId, iterationId);
      }
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