loadRecords method
Initiates a loading of records limited by the query and
identified by loadingKey.
Implementation
void loadRecords(Query query, {LoadingKey loadingKey = defaultLoadingKey}) {
if (isRecordsLoading(loadingKey, query: query)) return;
onRecordsLoadStart(query: query, loadingKey: loadingKey);
_cancelIfRecordsLoading(loadingKey);
unawaited(_loadRecords(query, loadingKey: loadingKey));
}