close method
Implementation
Future close() async {
while (sendQueue.isNotEmpty) {
masterConnection?._sendBuffer();
}
sendQueue.clear();
_masterConnection == null;
for (var hostUrl in _connectionPool.keys) {
var connection = _connectionPool[hostUrl];
_log.fine(() => '$db: ${connection?.serverConfig.hostUrl} closed');
await connection?.close();
}
replyCompleters.clear();
}