@Override
      public LookupEntriesByKeysTrace lookupStarted(final @NotNull IndexId<?, ?> indexId) {
        final LookupEntriesByKeysTrace trace = super.lookupStarted(indexId);

        this.lookupOperation = LookupOperation.UNKNOWN;
        this.lookupKeysCount = -1;
        this.indexValidationFinishedAtMs = -1;

        //for re-entrant calls could be != this
        return trace;
      }
@Override
      public LookupEntriesByKeysTrace lookupStarted(final @NotNull IndexId<?, ?> indexId)