code: public Observable<DscNodeConfigurationInner> createOrUpdateAsync(String resourceGroupName, String automationAccountName, String nodeConfigurationName, DscNodeConfigurationCreateOrUpdateParameters parameters) {
          return createOrUpdateWithServiceResponseAsync(resourceGroupName, automationAccountName, nodeConfigurationName, parameters).map(new Func1<ServiceResponse<DscNodeConfigurationInner>, DscNodeConfigurationInner>() {
              @Override
              public DscNodeConfigurationInner call(ServiceResponse<DscNodeConfigurationInner> response) {
                  return response.body();
              }
          });
      }
docs: Create the node configuration identified by node configuration name.
  
  @param resourceGroupName Name of an Azure Resource group.
  @param automationAccountName The name of the automation account.
  @param nodeConfigurationName The create or update parameters for configuration.
  @param parameters The create or update parameters for configuration.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the DscNodeConfigurationInner object