Signaling
constructor(peerId: String, joinedAt: Long? = null, displayName: String? = null, appPeerId: String? = null, audioEnabled: Boolean? = null, videoEnabled: Boolean? = null, connectionStatus: ParticipantSignalingStatus = ParticipantSignalingStatus.ACTIVE, contentState: SignalingProviderParticipantContentState? = null, capabilities: SignalingProviderParticipantCapabilities? = null, mediaPolicy: SignalingProviderParticipantMediaPolicy? = null)