code: public Observable<IntegrationAccountInner> createOrUpdateAsync(String resourceGroupName, String integrationAccountName, IntegrationAccountInner integrationAccount) {
          return createOrUpdateWithServiceResponseAsync(resourceGroupName, integrationAccountName, integrationAccount).map(new Func1<ServiceResponse<IntegrationAccountInner>, IntegrationAccountInner>() {
              @Override
              public IntegrationAccountInner call(ServiceResponse<IntegrationAccountInner> response) {
                  return response.body();
              }
          });
      }
docs: Creates or updates an integration account.
  
  @param resourceGroupName The resource group name.
  @param integrationAccountName The integration account name.
  @param integrationAccount The integration account.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the IntegrationAccountInner object