syntax_data: {"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"ty::IntTy::I8"}]}
source_snippet:                 ty::IntTy::I8 => Some(sym::i8),
context_before:                 ty::IntTy::Isize => Some(sym::isize),
context_after:                 ty::IntTy::I16 => Some(sym::i16),