docs: public Observable<RunbookDraftInner> getAsync(String resourceGroupName, String automationAccountName, String runbookName) {
          return getWithServiceResponseAsync(resourceGroupName, automationAccountName, runbookName).map(new Func1<ServiceResponse<RunbookDraftInner>, RunbookDraftInner>() {
              @Override
              public RunbookDraftInner call(ServiceResponse<RunbookDraftInner> response) {
                  return response.body();
              }
          });
      }