syntax_data: {"ast_node_type":"other","tokens":[{"end":35,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:     if tcx.is_trait_alias(def_id) {
context_before: fn associated_items(tcx: TyCtxt<'_>, def_id: DefId) -> ty::AssocItems {
context_after:         ty::AssocItems::new(Vec::new())