class CalculatedPermissionsItem

class CalculatedPermissionsItem implements CalculatedPermissionsItemInterface {
    
    /**
     * Constructs a new CalculatedPermissionsItem.
     *
     * @param string[] $permissions
     *   The permission names.
     * @param bool $isAdmin
     *   (optional) Whether the item grants admin privileges.
     * @param string $scope
     *   (optional) The scope name, defaults to 'drupal'.
     * @param string|int $identifier
     *   (optional) The identifier within the scope, defaults to 'drupal'.
     */
    public function __construct(array $permissions, bool $isAdmin = FALSE, string $scope = AccessPolicyInterface::SCOPE_DRUPAL, string|int $identifier = AccessPolicyInterface::SCOPE_DRUPAL) {
        $this->permissions = $isAdmin ? [] : array_unique($permissions);
    }
    
    /**
     * {@inheritdoc}
     */
    public function getScope() : string {
        return $this->scope;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getIdentifier() : string|int {
        return $this->identifier;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getPermissions() : array {
        return $this->permissions;
    }
    
    /**
     * {@inheritdoc}
     */
    public function isAdmin() : bool {
        return $this->isAdmin;
    }
    
    /**
     * {@inheritdoc}
     */
    public function hasPermission(string $permission) : bool {
        return $this->isAdmin() || in_array($permission, $this->permissions, TRUE);
    }

}