code: public IterationPerformance getIterationPerformance(UUID projectId, UUID iterationId, GetIterationPerformanceOptionalParameter getIterationPerformanceOptionalParameter) {
          return getIterationPerformanceWithServiceResponseAsync(projectId, iterationId, getIterationPerformanceOptionalParameter).toBlocking().single().body();
      }
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
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the IterationPerformance object if successful.