def METHOD_NAME(self):
    self.login_as(user=self.user)
    self.create_attachment()
    path = f"/api/0/projects/{self.organization.slug}/{self.project.slug}/events/{self.event.event_id}/attachments/{self.attachment.id}/?download"
    with self.feature("organizations:event-attachments"):
        response = self.client.get(path)
    assert response.status_code == 200, response.content
    assert response.get("Content-Disposition") == 'attachment; filename="hello.png"'
    assert response.get("Content-Length") == str(self.file.size)
    assert response.get("Content-Type") == "application/octet-stream"
    assert b"File contents here" == close_streaming_response(response)