private static function getPageStreamingDescriptors()
{
$listSinksPageStreamingDescriptor = new PageStreamingDescriptor(['requestPageTokenField' => 'page_token', 'requestPageSizeField' => 'page_size', 'responsePageTokenField' => 'next_page_token', 'resourceField' => 'sinks']);
$pageStreamingDescriptors = ['listSinks' => $listSinksPageStreamingDescriptor];
return $pageStreamingDescriptors;
}