class Modifiers { constructor(registry, settings = {}) { registry.addPreRequestModifier(this.preRequest); registry.addPostRequestModifier(this.postRequest); } preRequest(request, orig) { request.headers.preRequestModifier = true; return request; } postRequest(response, orig) { response.body = 'Hello World'; response.response.body = 'Hello World'; return response; } } module.exports = Modifiers;