{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"//"}]}
        // are syntactic sugar for a lack of bounds so don't need this.
        // check for a `Sized` subtrait when looking for `MetaSized`. `PointeeSized` bounds
        if ecx.cx().is_lang_item(goal.predicate.def_id(), TraitSolverLangItem::MetaSized)