/* We need to descend down into a duplicate tree. */
DIN duplicateRoot = null;
DBIN duplicateBin = null;
BIN bin = (BIN) in;
try {
int index = bin.findEntry(mainKey, false, true);
if (index >= 0) {
Node node = null;
if (!bin.isEntryKnownDeleted(index)) {
/* If fetchTarget returns null, a deleted LN was cleaned. */
node = bin.fetchTarget(index);