friendica-addons/advancedcontentfilter/vendor/asset/vue-resource/src/http/interceptor/method.js

/**
 * HTTP method override Interceptor.
 */

export default function (request) {

    if (request.emulateHTTP && /^(PUT|PATCH|DELETE)$/i.test(request.method)) {
        request.headers.set('X-HTTP-Method-Override', request.method);
        request.method = 'POST';
    }

}