updatedData
Data callback that updates the cache when a data record is modified.
    connection.updatedData(responseData, requestData)
  
  Calls updateData on the cacheConnection to modify a data record stored in the cache.
Calls and returns the response from any underlying behavior's updatedData callback.
Parameters
- responseData 
{Object}:the data returned by the data update request
 - requestData 
{Object}:the data that was passed to the data update request
 
Returns
 {Object}: 
the data returned from an underlying behavior's updatedData callback, if one exists. Otherwise
returns the responseData.