/**
  * Removes an item from the drawer
  *
  * @param position Position to remove
  */
 public DrawerActivity removeItem(int position) {
   mDrawer.removeItem(position);
   return this;
 }
 /**
  * Removes an item from the drawer
  *
  * @param item Item to remove
  */
 public DrawerActivity removeItem(DrawerItem item) {
   mDrawer.removeItem(item);
   return this;
 }