should Keep Child In Left
open fun shouldKeepChildInLeft(child: T, versionVector: VersionVector?, allChildren: List<T>): Boolean
Returns true when child should be kept in the original (left) node rather than moved to the split sibling. Subclasses override this to implement merge-aware split semantics. The default always returns false.
Parameters
all Children
snapshot of all children (left + right) before the split.