func genSpiffeURI(td string, ns, serviceAccount string) (string, error) {
	var err error
	if ns == "" || serviceAccount == "" {
		err = fmt.Errorf(
			"namespace or service account empty for SPIFFE uri ns=%v serviceAccount=%v", ns, serviceAccount)
	}
	return URIPrefix + sanitizeTrustDomain(td) + "/ns/" + ns + "/sa/" + serviceAccount, err
}

					Namespace:         testNS,
					Addresses:         [][]byte{parseIP("140.140.0.10")},
					Network:           testNW,
					CanonicalName:     "a",
					CanonicalRevision: "latest",
					ServiceAccount:    "sa1",
					WorkloadType:      workloadapi.WorkloadType_POD,
					WorkloadName:      "name0",
					ClusterId:         testC,
				},
			},
		},
	}})

		Service:                 ASvc,
		ServiceAccount:          true,
		Ports:                   ports.All(),
		Subsets:                 []echo.SubsetConfig{{}},
		Locality:                "region.zone.subzone",
		IncludeExtAuthz:         c.IncludeExtAuthz,
		DisableAutomountSAToken: disableAutomountSAToken,
	}

	b := echo.Config{
		Service:         BSvc,
		ServiceAccount:  true,
		Ports:           ports.All(),

					},
				},
			}
			for _, tc := range testCases {
				t.NewSubTest(tc.name).Run(func(t framework.TestContext) {
					if tc.authorizeSidecar {
						serviceAccount := tc.from.Config().ServiceAccountName()
						serviceAccountName := serviceAccount[strings.LastIndex(serviceAccount, "/")+1:]
						authorizeSidecar(t, tc.from.Config().Namespace, serviceAccountName)
					}

  // +optional
  optional UserSubject user = 2;

  // `group` matches based on user group name.
  // +optional
  optional GroupSubject group = 3;

  // `serviceAccount` matches ServiceAccounts.
  // +optional
  optional ServiceAccountSubject serviceAccount = 4;
}

// UserSubject holds detailed information for user-kind subject.
message UserSubject {
  // `name` is the username that matches, or "*" to match all usernames.

		}
		allPublicKeys = append(allPublicKeys, publicKeys...)
	}
	validator, err := serviceaccount.NewLegacyValidator(lookup, serviceAccountGetter, secretsWriter)
	if err != nil {
		return nil, fmt.Errorf("while creating legacy validator, err: %w", err)
	}

	tokenAuthenticator := serviceaccount.JWTTokenAuthenticator([]string{serviceaccount.LegacyIssuer}, allPublicKeys, apiAudiences, validator)
	return tokenAuthenticator, nil
}

			if err != nil {
				return nil, err
			}
			pod = podObj.(*api.Pod)
			if name != pod.Spec.ServiceAccountName {
				return nil, errors.NewBadRequest(fmt.Sprintf("cannot bind token for serviceaccount %q to pod running with different serviceaccount name.", name))
			}
			uid = pod.UID
			if utilfeature.DefaultFeatureGate.Enabled(features.ServiceAccountTokenPodNodeInfo) {
				if nodeName := pod.Spec.NodeName; nodeName != "" {

  // +optional
  optional UserSubject user = 2;

  // `group` matches based on user group name.
  // +optional
  optional GroupSubject group = 3;

  // `serviceAccount` matches ServiceAccounts.
  // +optional
  optional ServiceAccountSubject serviceAccount = 4;
}

// UserSubject holds detailed information for user-kind subject.
message UserSubject {
  // `name` is the username that matches, or "*" to match all usernames.

  // +optional
  optional UserSubject user = 2;

  // `group` matches based on user group name.
  // +optional
  optional GroupSubject group = 3;

  // `serviceAccount` matches ServiceAccounts.
  // +optional
  optional ServiceAccountSubject serviceAccount = 4;
}

// UserSubject holds detailed information for user-kind subject.
message UserSubject {
  // `name` is the username that matches, or "*" to match all usernames.

  // +optional
  optional UserSubject user = 2;

  // `group` matches based on user group name.
  // +optional
  optional GroupSubject group = 3;

  // `serviceAccount` matches ServiceAccounts.
  // +optional
  optional ServiceAccountSubject serviceAccount = 4;
}

// UserSubject holds detailed information for user-kind subject.
message UserSubject {
  // `name` is the username that matches, or "*" to match all usernames.