title: sap.m.Tree: expand single node
body: <p>How to programmatically expand the only single node in sap.m.Tree control? JSONModel.</p>
  
  <p>In example
  <a href="http://embed.plnkr.co/jb9tggpFhv4DHg69785v/" rel="nofollow noreferrer">http://embed.plnkr.co/jb9tggpFhv4DHg69785v/</a></p>
  
  <p>Here I want to expand only node 1.2.1 without expanding all unneeded nodes.</p>