docs: function(aliasOrModel, removeModelIfUntracked) {
        var alias = this.__findAlias(aliasOrModel);
        if (alias) {
          delete this.__currentMappings[alias];
        }
        var model = this.getTrackedModel(alias);
        if (removeModelIfUntracked && model && _.isEmpty(this.__getTrackedModelFields(model))) {
          this.untrackModel(model);
        }
      }