Invoking code on a successful response

customController.js

myCustomJSMethod: function(module, guid){

	//Instantiate a SugarBean object representing record identified by GUID
	var beanObject = app.data.createBean(module, {id:guid});
	
	//Send request to REST v10 API to retrieve the record
	beanObject.fetch({
        //Define the anonymous function that will execute on a successful response
		success: function(data){ //the data parameter represents the JSON response from the API
			//Do something with the response upon successful request
			console.log(data); //This will simply output response to JS console
		}
	});	

}