public void METHOD_1 ( ) { synchronized ( this ) { if ( ! ( VAR_1 ) ) VAR_1 = true ; else throw new TYPE_1 ( ) ; } } 

public boolean METHOD_1 ( ) { synchronized ( this ) { if ( ! ( VAR_1 ) ) VAR_1 = true ; else throw new TYPE_1 ( ) ; } return VAR_1 ; } 
