code: protected <Y> List<T> getListByAttributeIn(SingularAttribute<T, Y> attribute, List<Y> values) {
          return getDatabaseSupport().getListByAttributeIn(getEntityClass(), attribute, values);
      }
docs: Gets the entities that have any of the target values of the specified
  attribute.
  
  @param <Y> the type of the attribute and target value.
  @param attribute the attribute of the entity to compare.
  @param values the target values of the given attribute.
  
  @return the matching entities. Guaranteed not <code>null</code>.