Interface MCallAnswer

interface MCallAnswer {
    answer: RTCSessionDescription;
    call_id: string;
    capabilities?: CallCapabilities;
    conf_id?: string;
    dest_session_id?: string;
    "org.matrix.msc3077.sdp_stream_metadata": SDPStreamMetadata;
    party_id?: string;
    sender_session_id?: string;
    version: string | number;
}