def AddComment(self, comment=''):
    if self.text:
      if comment and comment not in self.text:
        self.text += ', ' + comment
    else:
      self.text = comment
Test that CustomerMiddleware creates an anonymous Customer for
dataset/ETHPy150Open google/capirca/lib/nacaddr.py/IPv6.AddComment--crossover with--dataset/ETHPy150Open awesto/django-shop/testshop/skip_test_customer.py/CustomerTest.test_create_new_anonymous_customer