def METHOD_NAME(self):
    self.login_as(user=self.user)
    app = self.create_sentry_app(name="Sample", organization=self.org)
    self.client.post(self.url, data={"slug": app.slug}, format="json")
    response = self.client.post(self.url, data={"slug": app.slug}, format="json")
    assert SentryAppInstallation.objects.filter(sentry_app=app).count() == 1
    assert response.status_code == 200