question: public void attachView ( View view ) { if ( view == null ) { throw new IllegalArgumentException ( "Mvp view must be not null" ) ; } boolean isViewAdded = mViews . add ( view ) ; if ( ! isViewAdded ) { return ; } mInRestoreState . add ( view ) ; restoreState ( view ) ; mInRestoreState . remove ( view ) ; }
target:  Attach view to view state and apply saves state