code: public StreamingEndpointInner beginUpdate(String resourceGroupName, String accountName, String streamingEndpointName, StreamingEndpointInner parameters) {
          return beginUpdateWithServiceResponseAsync(resourceGroupName, accountName, streamingEndpointName, parameters).toBlocking().single().body();
      }
docs: Update StreamingEndpoint.
  Updates a existing StreamingEndpoint.
  
  @param resourceGroupName The name of the resource group within the Azure subscription.
  @param accountName The Media Services account name.
  @param streamingEndpointName The name of the StreamingEndpoint.
  @param parameters StreamingEndpoint properties needed for creation.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws ApiErrorException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the StreamingEndpointInner object if successful.