title: How to hide the display value in the column of Dojo dgrid?
body: <p>We are currently using a tree grid of dojo dgrid. The expanding arrows of tree grid are placed as first column. This first column is mapped with a attribute in the store. </p>
  
  <p>Currently the value of that attribute is getting displayed along with the expending arrow. But our requirement is to hide the value and display only the arrows.</p>
  
  <p>Can anyone suggest a way to configure this requirement in tree dgrid column? </p>