{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":".and_then(|def_id|"}]}
                        .and_then(|def_id| self.infcx.tcx.impl_of_assoc(def_id))
                        .type_dependent_def_id(cur_expr.hir_id)
                        .map(|def_id| self.infcx.tcx.associated_items(def_id))