{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":".map(|def_id|"}]}
                        .map(|def_id| self.infcx.tcx.associated_items(def_id))
                        .and_then(|def_id| self.infcx.tcx.impl_of_assoc(def_id))
                        .map(|assoc_items| {