增加获取附近相机接口字段可能为空判断

‘liusuyi’

2023-06-21 0d41af875165ed3d4bc0560b7053fdf43df51608

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export class SubscriptionLog {
  constructor(public subscribedFrame: number,
              public unsubscribedFrame: number = Number.POSITIVE_INFINITY) {
  }
}