Interface ICallHandlers

interface ICallHandlers {
    onCallFeedsChanged: (feeds: CallFeed[]) => void;
    onCallHangup: (call: MatrixCall) => void;
    onCallReplaced: (newCall: MatrixCall) => void;
    onCallStateChanged: (
        state: CallState,
        oldState: undefined | CallState,
    ) => void;
}