syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"ty::IntTy::I32"}]}
source_snippet:                 ty::IntTy::I32 => Some(sym::i32),
context_before:                 ty::IntTy::I16 => Some(sym::i16),
context_after:                 ty::IntTy::I64 => Some(sym::i64),