}
	nw1proxy := &model.Proxy{
		IPAddresses: []string{"9.9.9.9"},
		Metadata:    &model.NodeMetadata{Network: "nw1"},
		Type:        model.SidecarProxy,
		DNSDomain:   "testns.svc.cluster.local",
	}
	cl1proxy := &model.Proxy{
		IPAddresses: []string{"9.9.9.9"},
		Metadata:    &model.NodeMetadata{ClusterID: "cl1"},
		Type:        model.SidecarProxy,
		DNSDomain:   "testns.svc.cluster.local",
	}

	pod1 := &model.Proxy{

		return nil, fmt.Errorf("invalid proxy address %q: %v", proxy, err)
	}
	return proxyURL, nil
}

// useProxy reports whether requests to addr should use a proxy,
// according to the NO_PROXY or no_proxy environment variable.
// addr is always a canonicalAddr with a host and port.
func (cfg *config) useProxy(addr string) bool {
	if len(addr) == 0 {
		return true
	}
	host, port, err := net.SplitHostPort(addr)

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/serializer"
	"k8s.io/apimachinery/pkg/util/httpstream"
	utilnet "k8s.io/apimachinery/pkg/util/net"
	apiproxy "k8s.io/apimachinery/pkg/util/proxy"
	"k8s.io/apimachinery/third_party/forked/golang/netutil"
)

// SpdyRoundTripper knows how to upgrade an HTTP request to one that supports

	return len(c.Subsets) > 0 && c.Subsets[0].Annotations != nil && strings.HasPrefix(c.Subsets[0].Annotations[annotation.InjectTemplates.Name], "grpc-")
}

func (c Config) IsTProxy() bool {
	// TODO this could be HasCustomInjectionMode
	return len(c.Subsets) > 0 && c.Subsets[0].Annotations != nil && c.Subsets[0].Annotations[annotation.SidecarInterceptionMode.Name] == "TPROXY"
}

    params+=" --advertise-address=${vm_external_ip}"
    if [[ -n "${KUBE_API_SERVER_RUNASUSER:-}" && -n "${KUBE_API_SERVER_RUNASGROUP:-}" ]]; then
      chown -R "${KUBE_API_SERVER_RUNASUSER}":"${KUBE_API_SERVER_RUNASGROUP}" /etc/srv/sshproxy/
    fi
  fi

  local webhook_authn_config_mount=""
  local webhook_authn_config_volume=""
  if [[ -n "${GCP_AUTHN_URL:-}" ]]; then

      return Class.forName("com.google.apphosting.api.ApiProxy")
              .getMethod("getCurrentEnvironment")
              .invoke(null)
          != null;
    } catch (ClassNotFoundException e) {
      // If ApiProxy doesn't exist, we're not on AppEngine at all.
      return false;
    } catch (InvocationTargetException e) {
      // If ApiProxy throws an exception, we're not in a proper AppEngine environment.

      return Class.forName("com.google.apphosting.api.ApiProxy")
              .getMethod("getCurrentEnvironment")
              .invoke(null)
          != null;
    } catch (ClassNotFoundException e) {
      // If ApiProxy doesn't exist, we're not on AppEngine at all.
      return false;
    } catch (InvocationTargetException e) {
      // If ApiProxy throws an exception, we're not in a proper AppEngine environment.