* @brief Merge node to a not-full target node * * Since the target node is not-full, no overflow will happen. So we have * nothing to return. * * @param dst_node the target not-full node, that is the type is either * 2-node or 3-node, but not 4-node * @param node the source node we will merge from, type must be 2-node */
source not stored for this graph (policy: none)