All symfony actions will attempt to return the output of a template
based on teh action name unless otherwise told. So if an action has
the name tree (executeTree) it will attempt to render the template
treeSuccess.php by default.
If, however, you want to return your own content and not the
In addition there are other things you can do too like tell it to use
a different template to the one that it will automatically look for
(great for re-using a template you've created before) by doing:
$this-setTemplate('templatefilename'); //Note no return word in fron
and no Success.php at the
