Adapting nlobjRequest to nlobjRecord - readonly generic adapter class

I had a requirement to have readonly access to nlobjRecord and nlobjRequest objects using the same interface.

Here is my first solution I've come up with, if you have any ideas please let me know.

 /**   * A sort-of Adapter class to abstract the disimilar interfaces of nlobjRecord   * and nlobjRequest into a standard interface.   * I have several SuiteLets that will build themselves in both Forms and    * pure SuiteLets.  When syncing the data I need to pass my data source to the   * save method.  nlobjRecord and nlobjRequest are almost identical as far as    * data read access goes except for getParameter and getFieldValue.   *    * The class below will allow you to wrap either of these datasources and pass   * along to a method or operation that is expecting a consistent