Builds an index of all found components in the watched locations.
The function will try to get as much data into the pool as possible, so even if the update completes with false, it might still have added components to the pool.
The function will load from all possible data sources, preferring caches if they are up to date.
| this |
An instance of Pool. |
| cancellable |
a Cancellable. |
|
true if update completed without error. |