private void findEntriesSinceInEmptyIndexTest(boolean deletedEntries) throws StoreException {
    state.closeAndClearIndex();
    state.reloadIndex(true, false);
    StoreFindToken token = new StoreFindToken();
    token.setBytesRead(0);
    if (deletedEntries) {
      doFindDeletedEntriesSinceTest(token, Long.MAX_VALUE, Collections.emptySet(), token);
    } else {
      doFindEntriesSinceTest(token, Long.MAX_VALUE, Collections.emptySet(), token);
    }
  }
Tests the case where {@link PersistentIndex#findEntriesSince(FindToken, long)} or
{@link PersistentIndex#findDeletedEntriesSince(FindToken, long, long)} is run on an empty index.
@param deletedEntries if {@code true}, the test is on
{@link PersistentIndex#findDeletedEntriesSince(FindToken, long, long)}.
@throws StoreException
ambry-store/src/test/java/com/github/ambry/store/IndexTest.java