eZ\Bundle\EzPublishRestBundle\Features\Context\RestContext::createRequest PHP Method

    public function createRequest($type, $resource)
    {
        $this->restDriver->setMethod($type);
        $this->restDriver->setResource($this->changeMappedValuesOnUrl($resource));
        $this->responseObject = null;
    }

 /**
  * @When /^I create an edit request for this draft$/
  */
 public function iCreateAnEditRequestForThisDraft()
 {
     $url = sprintf('/content/objects/%d/versions/%d', $this->currentDraft->content->id, $this->currentDraft->content->versionInfo->versionNo);
     $this->restContext->createRequest('patch', $url);
     $this->restContext->requestObject = new VersionUpdate(['contentUpdateStruct' => $this->contentService->newContentUpdateStruct(), 'contentType' => $this->currentDraft->contentType]);
     $this->restContext->setHeaderWithObject('content-type', 'VersionUpdate');
 }