* Note that since we have the BIN/DBIN latched, we can safely check
* the node type. Any conversions from an LN to a dup tree must have
* the bin latched.
*/
addCursor(targetBin);
if (n.containsDuplicates()) {
assert !duplicateFetch;
/* Descend down duplicate tree, doing latch coupling. */
DIN duplicateRoot = (DIN) n;
duplicateRoot.latch(cacheMode);
targetBin.releaseLatch();