*/
private void deleteInPosition(Sha1SyncPositionHash position) {
Sha1Value prefix = new Sha1Value(position.position());
HashAndFeatureValue find = new HashAndFeatureValue(prefix, null, null);
// TODO, hmm, better search?
int i = Collections.binarySearch(m_featureSha1s, find, new IdAndValueSha1Comparator(versionFeatures));
if (i < 0) {
i = -i - 1;
}
for ( ; i < m_featureSha1s.size(); i++) {
HashAndFeatureValue value = m_featureSha1s.get(i);