def get_enterprise_user_id(self, obj):
<EOL>enterprise_learner = EnterpriseCustomerUser.objects.filter(user_id=obj.id).first()<EOL>return enterprise_learner and enterprise_learner.id<EOL>
Get enterprise user id from user object.

Arguments:
    obj (User): Django User object

Returns:
    (int): Primary Key identifier for enterprise user object.