public void open ( ) throws TYPE_1 , TYPE_2 { iterator = TYPE_3 . METHOD_1 ( ) . METHOD_2 ( VAR_1 ) . iterator ( VAR_2 ) ; } 

public void open ( ) throws TYPE_1 , TYPE_2 { iterator = TYPE_3 . METHOD_1 ( ) . METHOD_2 ( VAR_1 ) . iterator ( VAR_2 ) ; iterator . open ( ) ; } 
