如何使用HelixToolKit将.obj对象转换为XAML ?

I am new to WPF(3D) and HelixToolKit, I want to convert my .obj file into XAML code, I searched the entire library for the conversion of .obj to XAML but I didn't find anything to that, From which class file I can get this conversion code any idea? I am new to WPF(3D) and HelixToolKit, I want to