question: protected void afterAddInstance ( KDTreeNode node ) { node . m_Start ++ ; node . m_End ++ ; if ( ! node . isALeaf ( ) ) { afterAddInstance ( node . m_Left ) ; afterAddInstance ( node . m_Right ) ; } }
target:  Corrects the start and end indices of a  KDTreeNode after an instance is added to the tree. The start and end indices for the master index array (m_InstList)  stored in the nodes need to be updated for all nodes in the subtree on the  right of a node where the instance  was added.  NOTE: No outside class should call this method.