Function addSample

addSample(json?): void
Add a demo route, marker, or track by name to the current trip.
Parameters
- json: {
  name: string;
  type: "track" | "marker" | "route";
  } = ...
  - name: string
  - type: "track" | "marker" | "route"
Returns void
Example
```
{"type": "route", "name": "Seattle to Port Townsend"}
```