public Observable<IotHubDescriptionInner> updateAsync(String resourceGroupName, String resourceName) {
        return updateWithServiceResponseAsync(resourceGroupName, resourceName).map(new Func1<ServiceResponse<IotHubDescriptionInner>, IotHubDescriptionInner>() {
            @Override
            public IotHubDescriptionInner call(ServiceResponse<IotHubDescriptionInner> response) {
                return response.body();
            }
        });
    }
public Observable < IotHubDescriptionInner > updateAsync ( String resourceGroupName , String resourceName ) { return updateWithServiceResponseAsync ( resourceGroupName , resourceName ) . map ( new Func1 < ServiceResponse < IotHubDescriptionInner > , IotHubDescriptionInner > ( ) { @ Override public IotHubDescriptionInner call ( ServiceResponse < IotHubDescriptionInner > response ) { return response . body ( ) ; } } ) ; }
Update an existing IoT Hubs tags.
Update an existing IoT Hub tags. to update other fields use the CreateOrUpdate method.

@param resourceGroupName Resource group identifier.
@param resourceName Name of iot hub to update.
@throws IllegalArgumentException thrown if parameters fail the validation
@return the observable for the request