def METHOD_NAME(db, info):
    FakeModel = get_fake_model(model_base=models.UUIDModel)
    class Serializer(serializers.ModelSerializer):
        class Meta:
            model = FakeModel
            fields = "__all__"
    class CustomMutation(Mutation):
        class Meta:
            serializer_class = Serializer
    class AnotherMutation(Mutation):
        class Meta:
            serializer_class = Serializer
    class CustomValidation(BaseValidation):
        @validation_for(CustomMutation)
        def validate_custom_mutation(self, mutation, data, info):  # pragma: no cover
            return data
    assert CustomValidation().validate(AnotherMutation, {}, info) == {}