Method folder

Telegram/SourceFiles/data/data_session.cpp:5203–5211

}

not_null<Folder*> Session::folder(FolderId id) {
	if (const auto result = folderLoaded(id)) {
		return result;
	}
	const auto &[it, ok] = _folders.emplace(
		id,
		std::make_unique<Folder>(this, id));
	return it->second.get();
}

Folder *Session::folderLoaded(FolderId id) const {
	const auto it = _folders.find(id);