+ protected:
+ Clave* AddKeyR (const Clave *k, uint node_num, uint &left_child, uint &right_child);
+ Clave* AddKeyOtherR (const Clave *k, uint node_num, uint &left_child, uint &right_child);
+ Clave* AddKeyLeafR (const Clave *k, uint node_num, uint &left_child, uint &right_child);
+ bool FindKeyR (const Clave *k, uint node);