modentry;modfailure;modoccupied;modstate;modvacancy;pubuseentry::Entry;pubusefailure::Failure;pubuseoccupied::Occupied;pubusestate::State;pubusevacancy::Vacancy;/// Selects a read by its exact identity or its native completion echo.
pubenumQuery<E: Entry> {
Exact(E::Id),
Echo(E::Echo),}