IOS control device volume

Is there any way to control ios device volume. Currently i am using this plugin to control the device volume…

The problem here is that this plugin is using private api and not allowed to publish in appstore…
Is there any other plugin or workaround to control device volume in ios.

i am using ionic version 1

global packages:

cordova (Cordova CLI) : 7.1.0
Gulp CLI              : not installed globally

local packages:

Cordova Platforms : android 6.3.0 ios 4.5.4 windows 5.0.0
Ionic Framework   : ionic1 1.3.3