document method
Returns a DocumentReference with the provided name in this collection.
If no name
is provided, an auto-generated name is used.
Implementation
DocumentReference document([String? name]) {
String documentPath;
if (name == null) {
final key = PushIdGenerator.generatePushChildName();
documentPath = '$path/$key';
} else {
documentPath = '$path/$name';
}
return DocumentReference._path(
service as CarpService, studyId, documentPath);
}