src/DataService/DataService.php
public function setClientName($clientName){
       $this->clientName = $clientName;
       $serviceContext = $this->getServiceContext();
       $this->setupRestHandler($serviceContext);
       return $this;
    }
public function setClientName($clientName){
       $this->clientName = $clientName;
       $serviceContext = $this->getServiceContext();
       $this->setupRestHandler($serviceContext);
       return $this;
    }
The client Name can be either 'curl', 'guzzle', or 'guzzlehttp'.

@param String $clientName              The client Name used by the service

@return $this