Chain of Responsability Activity

@startuml
interface Validator {
{method} + setNext(Validator validator)
{method} + handle (Activity activity, UserPublisher userPublisher, String position, String userId)
}

abstract class BaseValidator {
{field} - next: Validator

{method} + setNext (Validator validator)
{method} + handle (Activity activity, UserPublisher userPublisher, String position, String userId)

}

class CertificateValidator {
{field} {static} - certificates: List<String>

{method} {static} + addCertificateList (String certificate)
{method} {static} + updateCertificateList(List<String> newCertificateList)
}

Validator <|.. BaseValidator
BaseValidator o-- Validator
BaseValidator ^-- PositionValidator
BaseValidator ^-- OrganisationValidator
BaseValidator ^-- CertificateValidator
BaseValidator ^-- CompetitivenessValidator
BaseValidator ^-- GenderValidator
@enduml