RedisHubLifetimeManager<THub>.RemoveFromGroupAsync 方法      
定义
重要
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public override System.Threading.Tasks.Task RemoveFromGroupAsync(string connectionId, string groupName, System.Threading.CancellationToken cancellationToken = default);
	override this.RemoveFromGroupAsync : string * string * System.Threading.CancellationToken -> System.Threading.Tasks.Task
	Public Overrides Function RemoveFromGroupAsync (connectionId As String, groupName As String, Optional cancellationToken As CancellationToken = Nothing) As Task
	参数
- connectionId
 - String
 
- groupName
 - String
 
- cancellationToken
 - CancellationToken