Mage2\Theme\Module::registerPermissions PHP Method

    protected function registerPermissions()
    {
        $permissions = [['title' => 'Theme List', 'routes' => 'admin.theme.index'], ['title' => 'Theme Upload', 'routes' => "admin.theme.create,admin.theme.store"], ['title' => 'Theme Activate', 'routes' => "admin.theme.activate"], ['title' => 'Theme Destroy', 'routes' => "admin.theme.destroy"]];
        foreach ($permissions as $permission) {
            Permission::add($permission);
        }
    }