virtualBackgroundSourceEnabled property Null safety
read / write
报告虚拟背景是否成功开启。（beta 功能）
The VirtualBackgroundSourceEnabledCallback typedef includes the following parameters:
- bool
enabled: 是否已成功开启虚拟背景：true: 成功开启虚拟背景。false: 未成功开启虚拟背景。
- VirtualBackgroundSourceStateReason
reason: 虚拟背景开启出错的原因或开启成功的提示。详见 VirtualBackgroundSourceStateReason。
Implementation
VirtualBackgroundSourceEnabledCallback? virtualBackgroundSourceEnabled;
