Serializer class inside serializer

[jatindergit]

If I create serializer class inside serializer then it works fine
`
class ListCompanyAdminSerializer(serializers.ModelSerializer):
class CompanyUserSerializer(serializers.ModelSerializer):
company = CompanySerializer(read_only=True)

    class Meta:
        model = CompanyUser
        fields = ['type', 'company']

user_company_users = CompanyUserSerializer(many=True, read_only=True)

class Meta:
    model = User
    fields = ['id', 'user_company_users', 'name', 'email', 'phone']

class RetrieveCompanyAdminSerializer(serializers.ModelSerializer):
class CompanyUserSerializer(serializers.ModelSerializer):
company = CompanySerializer(read_only=True)
positions = serializers.SerializerMethodField()

    def get_positions(self, company_user):
        return EmployeePositionSerializer(company_user.company_user_employee_positions.all(), many=True).data

    class Meta:
        model = CompanyUser
        fields = ['id', 'type', 'company', 'positions']

user_company_users = CompanyUserSerializer(many=True, read_only=True)
profile = ProfileSerializer(read_only=True)

class Meta:
    model = User
    fields = ['id', 'user_company_users', 'name', 'email', 'phone', 'is_active', 'profile']`

but drf-yasg gives error

drf_yasg.errors.SwaggerGenerationError: Schema for <class 'companies.api.v1.serializers.ListCompanyAdminSerializer.CompanyUserSerializer'> would override distinct serializer <class 'companies.api.v1.serializers.RetrieveCompanyAdminSerializer.CompanyUserSerializer'> because they implicitly share the same ref_name; explicitly set the ref_name attribute on both serializers' Meta classes

Do you think that I should not create serializer class inside serializer. Or they(drf_yasg) should should the bug.

Please suggest