apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/listener/CreationListener.java/CreationListener/CreationListener
class CreationListener:  public CreationListener(
      final PortalSettings portalSettings,
      final AdminServiceAPI.AppAPI appAPI,
      final AdminServiceAPI.NamespaceAPI namespaceAPI) {
    this.portalSettings = portalSettings;
    this.appAPI = appAPI;
    this.namespaceAPI = namespaceAPI;
  }