&getItemStyle($tree, 'text', -anchor => 'w',-fg => 'red');


sub getItemStyle 
{

   my $obj =  shift;  ## holds $tree
   my $type = shift;  ## holds text
   ## Now stringify the "-anchor =>'w' -fg => 'red'
   ## and make them a hash key and create the ItemStyle.
   ## So that next time if I call getItemStyle with same
   ## same parameters(-anchor and -fg ), it does not create
   ## the ItemStyle all over again and checks the hash if 
   ## the paramters exist as a key then returns its value. 
   ## Also we need to sort the parameters so that if we 
   ## cal getItemStyle with the same two parameters and 
   ## reverse the order of mentioning them (-fg => red , 
   ## -anchor =>'w') , it considers it as the same call 
   ## as (-anchor => 'w', -fg =>red) happened earlier .