isInformational() public method

Is response informative?
public isInformational ( ) : boolean
return boolean
 /**
  * {@inheritdoc}
  */
 public function getParameters()
 {
     $code = null;
     $codeType = null;
     $cacheable = null;
     if (null !== $this->response) {
         $code = sprintf('%d', $this->response->getStatusCode());
         $cacheable = $this->response->isCacheable() ? 'cacheable' : 'not_cacheable';
         if ($this->response->isInformational()) {
             $codeType = 'informational';
         } elseif ($this->response->isSuccessful()) {
             $codeType = 'successful';
         } elseif ($this->response->isRedirection()) {
             $codeType = 'redirection';
         } elseif ($this->response->isClientError()) {
             $codeType = 'client_error';
         } elseif ($this->response->isServerError()) {
             $codeType = 'server_error';
         } else {
             $codeType = 'other';
         }
     }
     return array('response_code' => $code, 'response_code_type' => $codeType, 'response_cacheable' => $cacheable);
 }
 public function testIsInformational()
 {
     $response = new Response('', 100);
     $this->assertTrue($response->isInformational());
     $response = new Response('', 200);
     $this->assertFalse($response->isInformational());
 }