bug(searchbar): setFocus does not work anymore

[AmitMY]

Ionic version: (check one with "x")
[ ] 1.x
[ ] 2.x
[x] 3.x

I'm submitting a ... (check one with "x")
[x] bug report
[ ] feature request
[ ] support request => Please do not submit support requests here, use one of these channels: https://forum.ionicframework.com/ or http://ionicworldwide.herokuapp.com/

Current behavior:
Doing:

@ViewChild("searchBar") searchBar: Searchbar;
...
this.searchBar.setFocus();
...

Says:

Property 'setFocus' does not exist on type 'Searchbar'.

Expected behavior:
It definitely worked before

Ionic info: (run ionic info from a terminal/cmd prompt and paste output below):

    Cordova CLI: 6.5.0
    Ionic Framework Version: 3.1.0
    Ionic CLI Version: 3.0.0-beta.5
    ios-deploy version: Not installed
    ios-sim version: Not installed
    OS: Windows 10
    Node Version: v6.9.1
    Xcode version: Not installed

[ionitron-bot]

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