{"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"if"}]}
                if let Some(trait_ref) = hir_bound.trait_ref()
            if let PredicateFilter::SelfTraitThatDefines(assoc_ident) = predicate_filter {
                    && let Some(trait_did) = trait_ref.trait_def_id()