Django db 2个外键中的一个不返回对象

from django.db import models

class ModelA(models.Model):
    name = models.CharField(max_length=100)

class ModelB(models.Model):
    model_a = models.ForeignKey(ModelA, on_delete=models.CASCADE, related_name='model_b')
    another_model_a = models.ForeignKey(ModelA, on_delete=models.CASCADE, related_name='another_model_b')
    name = models.CharField(max_length=100)

model_a = ModelA.objects.get(id=1)
model_b_objects = model_a.model_b.all()

another_model_b_objects = model_a.another_model_b.all()