@Override
    public String getSigningKeySetting() {
        return "cas.authn.oauth.access-token.crypto.signing.key";
    }
This is {@link OAuth20JwtAccessTokenCipherExecutor}.

@author Misagh Moayyed
@since 6.1.0
support/cas-server-support-oauth-core-api/src/main/java/org/apereo/cas/support/oauth/web/response/accesstoken/response/OAuth20JwtAccessTokenCipherExecutor.java