继承 Mongoose 模型中的静力学

如何解决继承 Mongoose 模型中的静力学

我有以下代码

collegeSchema.static("PostCollege",async function (body) {
  try {
    console.log(body);
    let college = new School.discriminator("College",collegeSchema)({ body });
    await college.save();
    return college;
  } catch (error) {
    console.log(error);
  }
});

当我运行上面的代码时，出现以下错误

MongooseError: `Model.discriminator()` cannot run without a model as `this`. Make sure you are not calling `new Model.discriminator()`

那么我应该如何编写这个以在模式静态中创建一个新的子模型？