Method addService

src/service/extensions-impl.js:402–418

* Add a service to the extension currently being registered. This is a * restricted method and it's allowed to be called only during the overall * extension registration. * @param {string} name * @param {function(new:Object, !./ampdoc-impl.AmpDoc)} implementationClass

(name, implementationClass)

   * @param {function(new:Object, !./ampdoc-impl.AmpDoc)} implementationClass
   */
  addService(name, implementationClass) {
    const holder = this.getCurrentExtensionHolder_(name);
    holder.extension.services.push(
      /** @type {!ExtensionServiceDef} */ ({
        serviceName: name,
        serviceClass: implementationClass,
      })
    );
    this.addDocFactory((ampdoc) => {
      registerServiceBuilderForDoc(
        ampdoc,
        name,
        implementationClass,
        /* instantiate */ true
      );
    });
  }

  /**
   * Add a ampdoc factory to the extension currently being registered. This is a