collections - Check collections

Check all collections referenced by the source. Since the collection check makes sense for index and inverse reference check, only, the GUID check (G) is ignored when being defined together with collection check.

When no source is defined, all global collections (extents) are checked. When an extent name (e.g. Persons) is passed as source, only the extent is checked. When a path is passed (e.g. Persons().accounts(), the accounts collection for each person is checked.