code: public Iteration updateIteration(UUID projectId, UUID iterationId, Iteration updatedIteration) {
          return updateIterationWithServiceResponseAsync(projectId, iterationId, updatedIteration).toBlocking().single().body();
      }
docs: Update a specific iteration.
  
  @param projectId Project id
  @param iterationId Iteration id
  @param updatedIteration The updated iteration model
  @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 Iteration object if successful.