text: createNewMatrixCall
  _initWithInvite
  callId
  _gotRemoteIceCandidate
  roomId
  direction
  _replacedBy
  answer
  hangup
  _onAnsweredElsewhere
  _onHangupReceived
  _receivedAnswer
  _initWithHangup
  
  
  isMicrophoneMuted
  setMicrophoneMuted
  isLocalVideoMuted
  setLocalVideoMuted
  