question: public void select ( int position , boolean fireEvent , boolean considerSelectableFlag ) { Item item = getItem ( position ) ; if ( item == null ) { return ; } if ( considerSelectableFlag && ! item . isSelectable ( ) ) { return ; } item . withSetSelected ( true ) ; if ( mPositionBasedStateManagement ) { mSelections . add ( position ) ; } notifyItemChanged ( position ) ; if ( mSelectionListener != null ) mSelectionListener . onSelectionChanged ( item , true ) ; if ( mOnClickListener != null && fireEvent ) { mOnClickListener . onClick ( null , getAdapter ( position ) , item , position ) ; } }
target:  selects an item and remembers it's position in the selections list