code: @Override
      public Predicate le(Expression<? extends Number> arg0, Number arg1)
      {
          // TODO Auto-generated method stub
          return new ComparisonPredicate(arg0, arg1, ConditionalOperator.LTE);
      }
docs: /*
  (non-Javadoc)
  
  @see
  javax.persistence.criteria.CriteriaBuilder#le(javax.persistence.criteria
  .Expression, java.lang.Number)