public SaveMineralNode(MineralNode node)
 {
     _node = node;
 }
 public void Delete(MineralNode node)
 {
 }
 public void Insert(MineralNode node)
 {
 }
 public void Update(MineralNode node)
 {
 }
 public DeleteMineralNode(MineralNode node)
 {
     _node = node;
 }