syntax_data: {"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"ty::UintTy::U8"}]}
source_snippet:                 ty::UintTy::U8 => Some(sym::u8),
context_before:                 ty::UintTy::Usize => Some(sym::usize),
context_after:                 ty::UintTy::U16 => Some(sym::u16),