text: public static DVConstraint CreateTimeConstraint(int comparisonOperator, String expr1, String expr2){if (expr1 == null){throw new ArgumentException("expr1 must be supplied");}OperatorType.ValidateSecondArg(comparisonOperator, expr1);String formula1 = GetFormulaFromTextExpression(expr1);Double value1 = formula1 == null ? ConvertTime(expr1) : Double.NaN;String formula2 = GetFormulaFromTextExpression(expr2);Double value2 = formula2 == null ? ConvertTime(expr2) : Double.NaN;return new DVConstraint(ValidationType.TIME, comparisonOperator, formula1, formula2, value1, value2, null);}