成员的完整列表，这些成员属于 JCMediaChannelParticipant,包括所有继承而来的类成员

	audio	JCMediaChannelParticipant
	displayName	JCMediaChannelParticipant
	netStatus	JCMediaChannelParticipant
	pictureSize	JCMediaChannelParticipant
	renderId	JCMediaChannelParticipant
	role	JCMediaChannelParticipant
	talking	JCMediaChannelParticipant
	type	JCMediaChannelParticipant
	userId	JCMediaChannelParticipant
	video	JCMediaChannelParticipant
	volumeStatus	JCMediaChannelParticipant