syntax_data: {"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"ty::Int(IntTy::I128)"}]}
source_snippet:             ty::Int(IntTy::I128) => "n",
context_before:             ty::Int(IntTy::I64) => "x",
context_after:             ty::Int(IntTy::Isize) => "i",