1    import kedr/i32
2                u32
3                bool
4                Char
5                Unit
6                String as StdString
7                Option
8                Some
9                None
10               Slice
11               Discard
12   import collection/Array
13                     List as StdList
14                     Map as StdMap
15                     Multimap as StdMultimap
16                     Multiset as StdMultiset
17                     StringBuilder
18                     SafeSlice
19