bug: angular, isAnimating() not defined on menu controller provider

[nogamenofun98]

Ionic version:
4.11.5

Current behavior:
when i import menu controller into a page component, i saw from the official ionic website listed got a method to detect is the menu animating or not. Link to Doc

but i couldn't find the method when writing code, IDE prompting method not found during compile and browser also say method not found.

Expected behavior:
it should be able to find the method and return the menu is animating or not.

Steps to reproduce:

1. just import the menu controller in any module, and write like this.menu.isAnimating(), it will show not found error

Related code:

Ionic info:

Ionic Info

Ionic:

   ionic (Ionic CLI)             : 4.11.0 (C:\Users\oks\AppData\Roaming\npm\node_modules\ionic)
   Ionic Framework               : @ionic/angular 4.11.5
   @angular-devkit/build-angular : 0.801.3
   @angular-devkit/schematics    : 8.1.3
   @angular/cli                  : 8.1.3
   @ionic/angular-toolkit        : 2.1.1

Cordova:

   cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
   Cordova Platforms     : browser 5.0.4
   Cordova Plugins       : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 4.1.3, (and 5 other plugins)

System:

   NodeJS : v10.15.3 (D:\Program\nodejs\node.exe)
   npm    : 6.4.1
   OS     : Windows 10

[thetaPC]

Thanks for the issue! This has been resolved via PR #28618 and will be available in an upcoming release of Ionic.

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.