@Override
    public void initialize() {
        super.initialize();
        this.scopes = ObjectUtils.defaultIfNull(this.scopes, new HashSet<>());
        this.audience = ObjectUtils.defaultIfNull(this.audience, new HashSet<>());
    }
Sets scopes.

@param scopes the scopes
support/cas-server-support-oauth-services/src/main/java/org/apereo/cas/support/oauth/services/OAuthRegisteredService.java