docs: function(namespacedEvent, callback) {
        var callbacks, event, key, namespace, _ref;
        _ref = namespacedEvent.split("."), event = _ref[0], namespace = _ref[1];
        if (event) {
          eventCallbacks[event] || (eventCallbacks[event] = []);
          if (namespace) {
            eventCallbacks[event] = eventCallbacks.select(function(callback) {
              var _ref2;
              return !(((_ref2 = callback.__PIXIE) != null ? _ref2[namespace] : void 0) != null);
            });
          } else {
            if (callback) {
              eventCallbacks[event].remove(callback);
            } else {
              eventCallbacks[event] = [];
            }
          }
        } else if (namespace) {
          for (key in eventCallbacks) {
            callbacks = eventCallbacks[key];
            eventCallbacks[key] = callbacks.select(function(callback) {
              var _ref2;
              return !(((_ref2 = callback.__PIXIE) != null ? _ref2[namespace] : void 0) != null);
            });
          }
        }
        return this;
      }