}
	if !sa.Credentials.IsServiceAccount() {
		return UserIdentity{}, nil, errNoSuchServiceAccount
	}

	var embeddedPolicy *policy.Policy

	pt, ptok := jwtClaims.Lookup(iamPolicyClaimNameSA())
	sp, spok := jwtClaims.Lookup(policy.SessionPolicyName)
	if ptok && spok && pt == embeddedPolicyType {
		policyBytes, err := base64.StdEncoding.DecodeString(sp)
		if err != nil {
			return UserIdentity{}, nil, err
		}

						var resultErrno, expectErrno uintptr
						if pathErr, ok := err.(*os.PathError); ok {
							if errno, pok := pathErr.Err.(syscall.Errno); pok {
								resultErrno = uintptr(errno)
							}
						}
						if pathErr, ok := testCase.expectedErr.(*os.PathError); ok {
							if errno, pok := pathErr.Err.(syscall.Errno); pok {
								expectErrno = uintptr(errno)
							}
						}

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