public void METHOD_1 ( TYPE_1 event ) { for ( TYPE_2 data : VAR_1 . values ( ) ) { data . METHOD_2 ( ) ; } VAR_1 . METHOD_3 ( ) ; } 

public void METHOD_1 ( TYPE_1 event ) { for ( TYPE_2 data : VAR_1 . values ( ) ) { if ( data != null ) { data . METHOD_2 ( ) ; } } VAR_1 . METHOD_3 ( ) ; } 
