Agora RTC Objective-C API Reference Refactor

### - d -

- data() : IString
- DataChannelConfig() : DataChannelConfig
- DecRef() : RefCounter
- Decrement() : AtomicOps
- defaultConfig : AgoraLiveChannelConfig
- deleteAttributes() : IChannel
- delImageSource() : IVideoMixerSource
- deliverVideoFrame() : IExtensionVideoFilter::Control
- deliverVideoFrame: : <AgoraVideoFilterControlDelegate>
- delStreamLayout() : IVideoMixerSource
- destroy : AgoraLiveKit , AgoraLocalSpatialAudioKit , AgoraMetachatKit , AgoraMusicContentCenter , AgoraRtcEngineKit , AgoraMetachatScene , AgoraRtmClientKit , AgoraRtmStreamChannel
- destroyCustomAudioTrack() : IMediaEngine
- destroyCustomAudioTrack: : AgoraRtcEngineKit
- destroyCustomEncodedVideoTrack() : IRtcEngine
- destroyCustomEncodedVideoTrack: : AgoraRtcEngineKit
- destroyCustomVideoTrack() : IRtcEngine
- destroyCustomVideoTrack: : AgoraRtcEngineKit
- destroyLoopbackAudioTrack() : IMediaEngine
- destroyMediaPlayer() : IRtcEngine
- destroyMediaPlayer: : AgoraRtcEngineKit
- destroyMediaRecorder() : IRtcEngine
- destroyMediaRecorder: : AgoraRtcEngineKit
- destroyMusicPlayer: : AgoraMusicContentCenter
- DeviceInfo() : DeviceInfo
- didDataStreamWillStart : <AgoraVideoSinkDelegate>
- didDataStreamWillStop : <AgoraVideoSinkDelegate>
- DirectCdnStreamingMediaOptions() : DirectCdnStreamingMediaOptions
- disableAudio : AgoraRtcEngineKit , IRtcEngine
- disableAudioSpectrumMonitor : AgoraRtcEngineKit , ILocalUser , IRtcEngine
- disableExtension() : IAgoraService
- disableMe() : IExtensionVideoFilter::Control , ILipSyncFilter::Control
- disableMe:value: : <AgoraVideoFilterControlDelegate>
- disableVideo : AgoraRtcEngineKit , IRtcEngine
- disconnect() : IRtcConnection , IRtmpConnection
- DownlinkNetworkInfo() : DownlinkNetworkInfo
- downloadScene: : AgoraMetachatKit
- dumpVideoFrame() : IExtensionControl