Function follow

follow(rel, params?): OperatorFunction<Resource | null | undefined, Accessor | undefined>
Returns an RxJS operator to follow a link on a Resource. It is equivalent to
```
map(resource => resource?.follow(rel, params))
```
Parameters
- rel: string
  the relation to follow
- Optional params: Params
  the parameters to expand the link
Returns OperatorFunction<Resource | null | undefined, Accessor | undefined>
a function that transforms the source Observable
- Defined in src/lib/rxjs.ts:32