code: func (gce *Cloud) ListTargetHTTPSProxies() (*compute.TargetHttpsProxyList, error) {
  	// TODO: use PageToken to list all not just the first 500
  	return gce.service.TargetHttpsProxies.List(gce.projectID).Do()
  }
docs: // ListTargetHTTPSProxies lists all TargetHTTPSProxies in the project.