private void mapPossibleType(IDrawerItem drawerItem){
  if (!mTypeInstances.containsKey(drawerItem.getType())) {
    mTypeIds.add(drawerItem.getType());
    mTypeInstances.put(drawerItem.getType(),drawerItem);
  }
}

private void mapPossibleType ( IDrawerItem drawerItem ) { if ( ! mTypeInstances . containsKey ( drawerItem . getType ( ) ) ) { mTypeIds . add ( drawerItem . getType ( ) ) ; mTypeInstances . put ( drawerItem . getType ( ) , drawerItem ) ; } }
internal mapper to remember and add possible types for the recyclerview
