syntax_data: {"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"ty::Int(IntTy::I8)"}]}
source_snippet:             ty::Int(IntTy::I8) => "a",
context_before:             ty::Str => "e",
context_after:             ty::Int(IntTy::I16) => "s",