To have a field mapped to backref about peewee HOT 3 CLOSED

import peewee
from peewee import *

db = SqliteDatabase(':memory:')
print(peewee.__version__)

class DbModel(Model):
    class Meta:
        database = db

class UserData(DbModel):
    UserId = AutoField(primary_key=True)
    Login = CharField()

    Teacher = peewee.BackrefAccessor(Teacher.UserData)
    Student = peewee.BackrefAccessor(Student.UserData)

class Teacher(DbModel):
    SchoolName = CharField()
    UserData = ForeignKeyField(UserData, backref='Teacher', primary_key=True, object_id_name='TeacherId')

class Student(DbModel):
    University = CharField()
    UserData = ForeignKeyField(UserData, backref='Student', primary_key=True, object_id_name='StudentId')

db.create_tables([UserData, Teacher, Student])

with db.atomic():
    user_data = UserData.create(Login='user_login')
    teacher = Teacher.create(SchoolName='School1', UserData=user_data)
    student = Student.create(University='University1', UserData=user_data)

assert user_data.UserId == student.StudentId
assert user_data.Student == student
assert user_data.UserId == teacher.TeacherId
assert user_data.Teacher == teacher

3.16.2
Traceback (most recent call last):
  File "C:\repos\GitHub\ukd-orm\peewee_orm\peewee_deferred.py", line 11, in <module>
    class UserData(DbModel):
  File "C:\repos\GitHub\ukd-orm\peewee_orm\peewee_deferred.py", line 15, in UserData
    Teacher = peewee.BackrefAccessor(Teacher.UserData)
                                     ^^^^^^^
NameError: name 'Teacher' is not defined