def update_by_id_with_http_info(appliance_id, parameters:nil, custom_headers:nil)
      update_by_id_async(appliance_id, parameters:parameters, custom_headers:custom_headers).value!
    end
def update_by_id_with_http_info(appliance_id, parameters:nil, custom_headers:nil)
      update_by_id_async(appliance_id, parameters:parameters, custom_headers:custom_headers).value!
    end
Updates an existing appliance. The only value that can be updated via PATCH
 currently is the tags.

 @param appliance_id [String] The fully qualified ID of the appliance,
 including the appliance name and the appliance resource type. Use the format,
 /subscriptions/{guid}/resourceGroups/{resource-group-name}/Microsoft.Solutions/appliances/{appliance-name}
 @param parameters [Appliance] Parameters supplied to update an existing
 appliance.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [MsRestAzure::AzureOperationResponse] HTTP response information.