interface RTCDTMFToneChangeEvent implements Eventimport { type RTCDTMFToneChangeEvent } from "https://deno.land/x/windmill@v1.361.1/node_modules/evt/src/lib/types/lib.dom.ts"; Events sent to indicate that DTMF tones have started or finished playing. This interface is used by the tonechange event. Propertiesreadonlytone: string