How can the design of the SPORTidentStamp class be improved to adhere to better OOP principles and enhance code readability and maintainability?

The design of the SPORTidentStamp class can be improved by separating its responsibilities into smaller, more cohesive classes. This can be achieved by creating separate classes for handling stamp validation, parsing, and formatting. By adhering to the Single Responsibility Principle and separating concerns, the code will be easier to read, maintain, and extend.

class SPORTidentStampValidator {
    public function validateStamp($stamp) {
        // Validation logic here
    }
}

class SPORTidentStampParser {
    public function parseStamp($stamp) {
        // Parsing logic here
    }
}

class SPORTidentStampFormatter {
    public function formatStamp($stamp) {
        // Formatting logic here
    }
}