private void DrawLinkButtons(SceneTextNode node)
 {
     if (linkingParentNode == null)
     {
         if (GUILayout.Button("Link"))
         {
             linkingParentNode = node;
         }
     }
     else if (node == linkingParentNode)
     {
         if (GUILayout.Button("Cancel"))
         {
             linkingParentNode = null;
         }
     }
     else if (linkingParentNode.GetChildren().Contains(node.name))
     {
         if (GUILayout.Button("Unlink"))
         {
             linkingParentNode.RemoveChild(node.name);
             linkingParentNode = null;
         }
     }
     else
     {
         if (GUILayout.Button("Child"))
         {
             linkingParentNode.AddChild(node.name);
             linkingParentNode = null;
         }
     }
 }