### Question:
CollUpdateClause implements UpdateClause<CollUpdateClause<T>> { @Override public long execute() { int rv = 0; for (T match : query.fetch()) { BeanMap beanMap = new BeanMap(match); for (Map.Entry<Path<?>,Object> entry : paths.entrySet()) { String propertyName = entry.getKey().getMetadata().getName(); beanMap.put(propertyName, entry.getValue()); } rv++; } return rv; } CollUpdateClause(QueryEngine qe, Path<T> expr, Iterable<? extends T> col);  CollUpdateClause(Path<T> expr, Iterable<? extends T> col); @Override long execute(); @Override CollUpdateClause<T> set(Path<U> path, U value); @Override CollUpdateClause<T> set(Path<U> path, Expression<? extends U> expression); @Override CollUpdateClause<T> setNull(Path<U> path); @Override CollUpdateClause<T> set(List<? extends Path<?>> p, List<?> v); @Override CollUpdateClause<T> where(Predicate... o); @Override String toString(); @Override boolean isEmpty();  }### Answer:
@Test public void execute() { QCat cat = QCat.cat; List<Cat> cats = Arrays.asList(new Cat("Ann"), new Cat("Bob"), new Cat("John"), new Cat("Carl")); CollUpdateClause<Cat> updateClause = new CollUpdateClause<Cat>(cat, cats); updateClause.where(cat.name.eq("Bob")); updateClause.set(cat.name, "Bobby"); assertEquals(1, updateClause.execute()); assertEquals("Bobby", cats.get(1).getName()); }