{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"LookupResult::Exact(mpi)"}]}
            LookupResult::Exact(mpi) | LookupResult::Parent(Some(mpi)) => {
        match self.move_data.rev_lookup.find(deref_base) {
                debug!("borrowed_content_source: mpi={:?}", mpi);