Function readCollection

readCollection<T>(type): OperatorFunction<Accessor | null | undefined, Collection<T> | undefined>
Returns an RxJS operator to read a Collection of resources using an Accessor. It is equivalent to
```
switchMap(accessor => of(undefined))
```
if accessor is null or undefined and to
```
switchMap(accessor => accessor.readCollection(type))
```
otherwise.
Type Parameters
- T extends Resource
Parameters
- type: Type<T>
  the collection element type
Returns OperatorFunction<Accessor | null | undefined, Collection<T> | undefined>
a function that transforms the source Observable
- Defined in src/lib/rxjs.ts:99