### Question:
BeanSubQuery extends DetachableAdapter { public BeanSubQuery where(Predicate... o) { return queryMixin.where(o); } BeanSubQuery(); BeanSubQuery from(EntityPath<?>... o); BeanSubQuery orderBy(OrderSpecifier<?>... o); BeanSubQuery where(Predicate... o);  }### Answer:
@Test public void Where() { beanSubQuery.where(stringPath.isNotNull()); }