imyaman

class Product {
    Set<BacklogItem> backlogItems;

    BusinessPriorityTotals businessPriorityTotals() {
        //...
    }
}

class Product {
    static BusinessPriorityTotals businessPriorityTotals(
            Set<BacklogItem> aBacklogItems) {
        // ...
    }
}

package com.saasovation.identityaccess.domain.model.identity;   // !!

interface AuthenticationService {
    UserDescriptor authenticate(
        TenantId tenantId,
        String username,
        Strin password);
}

package com.saasovation.identityaccess.infra.services;   // !!

class EncryptionAuthenticationService implements AuthenticationService {
    @Override
    UserDescriptor authenticate(
            @NonNull TenantId tenantId,
            @NonNull String username,
            @NonNull Strin password) {

        Tenant tenant = tenantRepository.findById(tenantId);
        if (tenant == null || !tenant.isActive()) {
            throw new TenantNotFoundException(tenantId);
        }
        String encryptedPassword = 
                encryptService.encryptedValue(passwod); // 암호화 책임도 도메인 서비스?
        User user = userRepository.findByTenantAndUsernameAndPassword(
            tenant, username, encryptedPassword);
        if (user == null || !user.isEnabled()) {
            throw new UserNotFoundException(username);
        }
        return user.userDescriptor();
    }
}

package com.saasovation.collaboration.infra.services;

class UserInRoleAdapter {
    <T extends Collaborator> T toCollaborator(
            Tenant tenant, String identity, String role, 
            Class<T> collaboratorClass);
}

package com.sasovation.collaboration.infra.services;

class CollbaratorTransaltor {
    <T extends Collaborator> T toCollaboratorFrom(
            String json, Class<T> collaboratorClass);
}