public function hasPermissionThroughRole($permission)
    {
        if (! $this->isMethodRolesExists()) {
            return false;
        }

        if (! $permission = $this->preparePermission($permission)) {
            return false;   
        }

        foreach ($permission->roles as $role) { 
            if ($this->roles->contains($role)) {
                return true;
            }
        }

        return false;
    }