updateDefaultVpa
Updates the default VPA, which is the VPA that will be invoked when the user presses the "Push-To-Talk" button. If vpaIdentifier is null
, no VPA will be invoked when the user presses the "Push-To-Talk" button.
Parameters
vpaIdentifier
The VPA to be set as default or null
if no VPA should be set as default. This is the identifier given by the VPA in VpaProperties.vpaIdentifier.