Data Adapter API - option 1

gistfile1.js

// Advantage: the adapter can be used by multiple tools at the same time and every `getModelTypes` request is isolated.

getModelTypes: function(target, typesReceived, typeAdded, typeUpdated, typeRemoved) {
  // code to fetch types ...
  // ...
  
  // call typesReceived and pass fetched types
  typesReceived.call(target, types);
  
  // .. setup array observers to call typeAdded, typeUpdated, and typeRemoved on changes
  
  var releaseMethod = function() {
    //.. code to clear all observers
  }
  return releaseMethod;
}