toneChangeEvent constant Null safety

EventStreamProvider<RtcDtmfToneChangeEvent> const toneChangeEvent

Static factory designed to expose tonechange events to event handlers that are not necessarily instances of RtcDtmfSender.

See EventStreamProvider for usage information.

Implementation

static const EventStreamProvider<RtcDtmfToneChangeEvent> toneChangeEvent =
    const EventStreamProvider<RtcDtmfToneChangeEvent>('tonechange')