-1 for a util file. Main concern is loopback browser support. One method in the util file may be fine for the browser and another not (such as `createKey()`). We can only exclude code for the browser on a file basis, so our code has to be organized in a way that allows that.

Can we move model related (eg. getModel()) to the base model class eg. `Model.getModel()`. Also with a better name. Not really sure what the point is here, but it looks like its useful for getting models.

If we must have the util file can me move it to lib?