CHHapticDynamicParameterIDAudioVolumeControl

objc2_core_haptics

Static CHHapticDynamicParameterIDAudioVolumeControl 

Source 
pub unsafe static CHHapticDynamicParameterIDAudioVolumeControl: &'static CHHapticDynamicParameterID
Available on crate feature CHHapticParameter only.
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Apple’s documentation