public synchronized void METHOD_1 ( TYPE_1 event ) { if ( event == null ) { return ; } switch ( event ) { case VAR_1 : VAR_2 = null ; default : METHOD_2 ( ) ; } } 

public synchronized void METHOD_1 ( TYPE_1 event ) { if ( event == null ) { return ; } VAR_2 = null ; METHOD_2 ( ) ; } 
