类型别名 ServerEvents

ServerEvents: {
    closed(): void;
    descriptionReceived(description: ServerDescription): void;
    ended(): void;
    serverHeartbeatFailed(event: ServerHeartbeatFailedEvent): void;
    serverHeartbeatStarted(event: ServerHeartbeatStartedEvent): void;
    serverHeartbeatSucceeded(event: ServerHeartbeatSucceededEvent): void;
} & ConnectionPoolEvents & EventEmitterWithState