syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"self.trait_def(def_id).constness"}]}
source_snippet:         self.trait_def(def_id).constness == hir::Constness::Const
context_before:     pub fn is_const_trait(self, def_id: DefId) -> bool {
context_after:     }