code: public StructuredQueryDefinition rangeConstraint(String constraintName, Operator operator, String... values) {
      return new RangeConstraintQuery(constraintName, operator, values);
    }
docs: Matches the container specified by the constraint
  whose value that has the correct datatyped comparison with
  one of the criteria values.
  @param constraintName    the constraint definition
  @param operator    the comparison with the criteria values
  @param values    the possible datatyped values for the comparison
  @return    the StructuredQueryDefinition for the range constraint query