public TYPE_1 METHOD_1 ( java.util.Collection < java.lang.Integer > VAR_1 ) { this . VAR_2 . METHOD_2 ( ) ; this . VAR_2 . METHOD_3 ( VAR_1 ) ; return this ; } 

public TYPE_1 METHOD_1 ( java.util.Collection < java.lang.Integer > VAR_1 ) { this . VAR_2 . METHOD_2 ( ) ; if ( VAR_1 != null ) { this . VAR_2 . METHOD_3 ( VAR_1 ) ; } return this ; } 
