syntax_data: {"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"ty::Uint(UintTy::U128)"}]}
source_snippet:             ty::Uint(UintTy::U128) => "o",
context_before:             ty::Uint(UintTy::U64) => "y",
context_after:             ty::Uint(UintTy::Usize) => "j",