code: public static IsLessThan isLessThan(ComparableExpression<Number> left, ComparableExpression<Number> right) {
          return new IsLessThan(left, right);
      }
docs: Creates an IsLessThan expression from the given expressions.
  
  @param left  The left expression.
  @param right The right expression.
  @return A new is less than binary expression.