syntax_data: {"ast_node_type":"other","tokens":[{"end":36,"kind":"keyword","start":0,"text":"Some(ty)"}]}
source_snippet:                 Some(ty) => ty.span,
context_before:             let span = match tcx.hir_node_by_def_id(item).ty() {
context_after:                 _ => tcx.def_span(item),