Twilio Chat Client Hierarchy Class Hierarchy NSError TCHError NSObject TCHChannel TCHChannelDescriptor TCHChannelDescriptorPaginator TCHChannels TCHMember TCHMemberPaginator TCHMembers TCHMessage TCHMessages TCHResult TCHUser TCHUserDescriptor TCHUserDescriptorPaginator TCHUsers TwilioChatClient TwilioChatClientProperties Protocol References TCHChannelDelegate TwilioChatClientDelegate Constant References TCHChannelStatus TCHChannelSynchronizationStatus TCHChannelType TCHChannelUpdate TCHClientConnectionState TCHClientSynchronizationStatus TCHLogLevel TCHMemberUpdate TCHMessageUpdate TCHUserUpdate