code: public Observable<ServiceResponse<IterationPerformance>> getIterationPerformanceWithServiceResponseAsync(UUID projectId, UUID iterationId, GetIterationPerformanceOptionalParameter getIterationPerformanceOptionalParameter) {
          if (projectId == null) {
              throw new IllegalArgumentException("Parameter projectId is required and cannot be null.");
          }
          if (iterationId == null) {
              throw new IllegalArgumentException("Parameter iterationId 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 Double threshold = getIterationPerformanceOptionalParameter != null ? getIterationPerformanceOptionalParameter.threshold() : null;
          final Double overlapThreshold = getIterationPerformanceOptionalParameter != null ? getIterationPerformanceOptionalParameter.overlapThreshold() : null;
  
          return getIterationPerformanceWithServiceResponseAsync(projectId, iterationId, threshold, overlapThreshold);
      }
docs: Get detailed performance information about an iteration.
  
  @param projectId The id of the project the iteration belongs to
  @param iterationId The id of the iteration to get
  @param getIterationPerformanceOptionalParameter 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 IterationPerformance object