def METHOD_NAME(self):
    """
    GIVEN:
        - A user already exists with the username admin
        - Environment does contain admin user password
    THEN:
        - Password remains unchanged
        - User is not upgraded to superuser
    """
    User.objects.create_user("admin", "root@localhost", "password")
    out = self.call_command(environ={"PAPERLESS_ADMIN_PASSWORD": "123456"})
    self.assertEqual(User.objects.count(), 3)
    user: User = User.objects.get_by_natural_key("admin")
    self.assertTrue(user.check_password("password"))
    self.assertFalse(user.is_superuser)
    self.assertEqual(out, "Did not create superuser, a user admin already exists\n")