NIMSignalingCancelInviteRequest 成员列表

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

	accountId	NIMSignalingCancelInviteRequest
	channelId	NIMSignalingCancelInviteRequest
	customInfo	NIMSignalingCancelInviteRequest
	offlineEnabled	NIMSignalingCancelInviteRequest
	requestId	NIMSignalingCancelInviteRequest