participant method Null safety

Participant participant(
  1. Map participantDict
)

Implementation

Participant participant(Map participantDict) {
  MediaState mediaState = MediaState(participantDict[kVideoEnabled], participantDict[kAudioEnabled], participantDict[kScreenEnabled]);
  Participant participant = Participant(participantDict[kParticipantId], participantDict[kParticipantName], participantDict[kTextureId], mediaState);
  return participant;
}