public ChecklistCollection(ChecklistsBase checklistsBase) { _checklistsBase = checklistsBase; }
internal CheckListOperations(ChecklistsBase checklistsBase) { _checklistsBase = checklistsBase; }
internal static IChecklistCollection Create(ChecklistsBase checklistsBase) => _checklistCollection ?? (_checklistCollection = new ChecklistCollection(checklistsBase));
internal static ICheckListOperations Create(ChecklistsBase checklistsBase) => _checkListOperations ?? (_checkListOperations = new CheckListOperations(checklistsBase));