code: func (gce *Cloud) SetSslCertificateForTargetHTTPSProxy(proxy *compute.TargetHttpsProxy, sslCert *compute.SslCertificate) error {
  	op, err := gce.service.TargetHttpsProxies.SetSslCertificates(gce.projectID, proxy.Name, &compute.TargetHttpsProxiesSetSslCertificatesRequest{SslCertificates: []string{sslCert.SelfLink}}).Do()
  	if err != nil {
  		return err
  	}
  	return gce.waitForGlobalOp(op)
  }
docs: // SetSslCertificateForTargetHTTPSProxy sets the given SslCertificate for the given TargetHTTPSProxy.