Interface VoipEvent

interface VoipEvent {
    content:
        | MCallAnswer
        | MCallSelectAnswer
        | MCallInviteNegotiate
        | MCallReplacesEvent
        | MCallCandidates
        | MCallHangupReject
        | Omit<MCallInviteNegotiate, "offer">
        | MCallBase & {
            "org.matrix.msc3077.sdp_stream_metadata": SDPStreamMetadata;
        };
    eventType: string;
    opponentDeviceId?: string;
    roomId?: string;
    type: "toDevice"
    | "sendEvent";
    userId?: string;
}