pkg/front_end/parser_testcases/record/nested_generics_with_records.dart

List<(int, int)> l1;
List<List<(int, int)>> l2;
List<List<List<(int, int)>>> l3;
List<List<List<List<(int, int)>>>> l4;
List<List<List<List<List<(int, int)>>>>> l5;
List<List<List<List<List<List<(int, int)>>>>>> l6;
List<List<List<List<List<List<List<(int, int)>>>>>>> l7;
List<List<List<List<List<List<List<List<(int, int)>>>>>>>> l8;
List<List<List<List<List<List<List<List<List<(int, int)>>>>>>>>> l9;
List<List<List<List<List<List<List<List<List<List<(int, int)>>>>>>>>>> l10;