TreeModel.$2 constructor
      
      TreeModel.$2([ 
    
    
- dynamic init
Implementation
factory TreeModel.$2([_i2.dynamic init]) => _i4.callConstructor(
      _declaredTreeModel,
      [init ?? _i5.undefined],
    );factory TreeModel.$2([_i2.dynamic init]) => _i4.callConstructor(
      _declaredTreeModel,
      [init ?? _i5.undefined],
    );