collectionGroup method
Gets a Query
for the specified collection group.
Implementation
@override
CollectionReference<Map<String, dynamic>> collectionGroup(
String collectionId) {
assert(!collectionId.contains('/'), 'Collection ID should not contain "/"');
return MockCollectionReference(
this,
collectionId,
buildTreeIncludingCollectionId(_root, _root, collectionId, {}),
_docsData,
buildTreeIncludingCollectionId(_snapshotStreamControllerRoot,
_snapshotStreamControllerRoot, collectionId, {}),
isCollectionGroup: true,
);
}