Future initializeApplication(ApplicationConfiguration config)

One-time setup method for an application.

This method is invoked as the first step during application startup. It is only invoked once per application, whereas other initialization methods are invoked once per isolate. Implement this method in an application's RequestSink subclass. This method is often used to read configuration values from the configuration file:

    class MyRequestSink extends RequestSink {
      static Future initializeApplication(ApplicationConfiguration config) async {
        var configurationValuesFromFile = ...;
        config.options = configurationValuesFromFile;
      }
  • Note that static methods are not inherited in Dart and therefore you are not overriding this method. The declaration of this method in the base RequestSink classis for documentation purposes..

Source

static Future initializeApplication(ApplicationConfiguration config) async {}