public boolean add ( TYPE_1 VAR_1 ) { if ( this . contains ( VAR_1 ) ) { throw new TYPE_2 ( STRING_1 ) ; } <BUG> return false ;</BUG> }
public boolean add ( TYPE_1 VAR_1 ) { if ( this . contains ( VAR_1 ) ) { throw new TYPE_2 ( STRING_1 ) ; } return super . add ( VAR_1 ) ; } 
