title: How to Reference a Particular Node in a GridPane
body: <p>I have a grid of tiles with a stack pane on top of each tile in order to place a shape on each tile.<br/> 
  I want to have a method by which I can remove the stack pane from a particular tile on the grid, which means that in effect it should remove the shape on top of the tile. <br/>
  Could I perhaps store each stack pane in an array of some sort and reference it by the index? I populate the grid by using a nested for loop. <br/>
  I am also given the row and column of the stack pane that I want to remove. </p>