CqlSharp.CqlConnection.Close C# (CSharp) Метод

        public override void Close()
        {
            if(State != ConnectionState.Closed)
            {
                var logger = LoggerManager.GetLogger("CqlSharp.CqlConnection.Close");

                try
                {
                    //wait until open is finished (may return immediatly)
                    _openTask.Wait();
                }
                catch(Exception ex)
                {
                    logger.LogVerbose("Closing connection that was not opened correctly: ", ex);
                }

                //return connection if any
                if(_connection != null)
                {
                    Cluster.ConnectionStrategy.ReturnConnection(_connection, ConnectionScope.Connection);
                    _connection = null;
                }

                //clear cluster
                _cluster = null;

                //clear database
                _database = string.Empty;

                //clear open task, such that open can be run again
                _openTask = null;
            }
        }