How to use the botframework-connector.AuthenticationConstants.AppIdClaim function in botframework-connector

public async createConnectorClientWithIdentity(serviceUrl: string, identity: ClaimsIdentity): Promise {
        if (!identity) {
            throw new Error('BotFrameworkAdapter.createConnectorClientWithScope(): invalid identity parameter.');
        }

        const botAppId = identity.getClaimValue(AuthenticationConstants.AudienceClaim) ||
            identity.getClaimValue(AuthenticationConstants.AppIdClaim);

        // Anonymous claims and non-skill claims should fall through without modifying the scope.
        let credentials: AppCredentials = this.credentials;

        // If the request is for skills, we need to create an AppCredentials instance with
        // the correct scope for communication between the caller and the skill.
        if (botAppId && SkillValidation.isSkillClaim(identity.claims)) {
            const scope = JwtTokenValidation.getAppIdFromClaims(identity.claims);
            if (this.credentials.oAuthScope === scope) {
                // Do nothing, the current credentials and its scope are valid for the skill.
                // i.e. the adatper instance is pre-configured to talk with one skill.
            } else {
                // Since the scope is different, we will create a new instance of the AppCredentials
                // so this.credentials.oAuthScope isn't overridden.
                credentials = await this.buildCredentials(botAppId, scope);