def METHOD_NAME(self):
    # Create a second organization where the user is _not_ a member.
    OrganizationIntegration.objects.create(
        organization_id=self.create_organization(name="Another Org").id,
        integration=self.integration,
    )
    # Unlink identity of user.
    self.client.post(self.unlinking_url)
    assert not Identity.objects.filter(external_id="new-slack-id", user=self.user).exists()
    assert len(responses.calls) == 1