code: function deprecateEvent(outbound, inbound, oldEventName, newEventName, canonicalOutboundName, canonicalInboundName) {
          // Mark deprecated so EventDispatcher.on() will emit warnings
          EventDispatcher.markDeprecated(outbound, oldEventName, canonicalInboundName);
  
          // create an event handler for the new event to listen for
          inbound.on(newEventName, function () {
              // Dispatch the event in case anyone is still listening
              EventDispatcher.triggerWithArray(outbound, oldEventName, Array.prototype.slice.call(arguments, 1));
          });
      }
docs: Show a deprecation warning if there are listeners for the event
  
  ```
  DeprecationWarning.deprecateEvent(exports,
  MainViewManager,
  "workingSetAdd",
  "workingSetAdd",
  "DocumentManager.workingSetAdd",
  "MainViewManager.workingSetAdd");
  ```
  
  @param {Object} outbound - the object with the old event to dispatch
  @param {Object} inbound - the object with the new event to map to the old event
  @param {string} oldEventName - the name of the old event
  @param {string} newEventName - the name of the new event
  @param {string=} canonicalOutboundName - the canonical name of the old event
  @param {string=} canonicalInboundName - the canonical name of the new event