public function impersonate($user_id, $protocol, $impersonator_id, $client_id, $additionalParameters = [])
{
$data = ['protocol' => $protocol, 'impersonator_id' => $impersonator_id, 'client_id' => $client_id, 'additionalParameters' => $additionalParameters];
return $this->apiClient->post()->users($user_id)->impersonate()->withHeader(new ContentType('application/json'))->withHeader(new AuthorizationBearer($this->access_token['access_token']))->withBody(json_encode($data))->call();
}