code: public static BooleanIsNotEqual isNotEqual(ComparableExpression<Boolean> left, ComparableExpression<Boolean> right) {
          return new BooleanIsNotEqual(left, right);
      }
docs: Creates an BooleanIsNotEqual expression from the given expressions.
  
  @param left  The left expression.
  @param right The right expression.
  @return A new BooleanIsNotEqual binary expression.