Type Alias SomeMap 

pub type SomeMap<T: Config<I>, I: 'static = ()> = StorageMap<_GeneratedPrefixForStorageSomeMap<T, I>, Twox64Concat, u32, u32, OptionQuery>;

Storage type is StorageMap with key type u32 and value type u32.

Aliased Type

pub struct SomeMap<T: Config<I>, I: 'static = ()>(/* private fields */);