{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"self.infcx.inner.borrow_mut().const_unification_table().find(vid).vid,"}]}
                    self.infcx.inner.borrow_mut().const_unification_table().find(vid).vid,
                if TermVid::Const(
                ) == self.root_vid