FluxBB\Models\Group::permissions PHP Method

    public function permissions()
    {
        return $this->hasMany('FluxBB\\Models\\GroupPermission');
    }

 protected function cachePermissions(Group $group)
 {
     $permissions = array();
     // Overwrite parent permissions if those are set
     if ($group->parent_id) {
         $permissions = $this->cachePermissions($group->parent);
     }
     $permissions = array_unique(array_merge($permissions, $group->permissions()->get()->all()));
     // Cache for 14 days
     $this->cache->put('fluxbb.group.permissions.' . $group->id, $permissions, 20160);
     return $permissions;
 }