Function startAutoPing

startAutoPing(interval?, websocketAlias?): void
Sends pings to the server at cyclical intervals.
Parameters
- Optional interval: number
  
  Interval in milliseconds.
- websocketAlias: string = "standard"
  
  WebSocket alias, otherwise the default alias is used.
Returns void
Promise, is resolved if the server responds with a PONG, otherwise it will be rejected.
Example
```
ix.websocket.startAutoPing();
ix.websocket.startAutoPing(40000);
```