code: public static <D extends Comparable> DateExpression<D> addWeeks(DateExpression<D> date, int weeks) {
          return Expressions.dateOperation(date.getType(), Ops.DateTimeOps.ADD_WEEKS, date, ConstantImpl.create(weeks));
      }
docs: Add the given amount of weeks to the date
  
  @param date date
  @param weeks weeks to add
  @return converted date