code: private function send()
  	{
  		$ch = curl_init($this->url);
  		curl_setopt($ch, CURLOPT_HEADER, 1);
  		curl_setopt($ch, CURLOPT_POST, 1);
  		curl_setopt($ch, CURLOPT_TIMEOUT, 60);
  		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
  		curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
  		curl_setopt($ch, CURLOPT_POSTFIELDS, $this->xml);
  		$result = curl_exec($ch);
  		$this->xml = strstr($result, '<?');
  
  		$this->xml_result = new \SimpleXMLElement($this->xml);
  
  		return $this->parseResult();
  	}
docs: Send the API request to the UPS webservice
  and return the results if there was no error.
  If there was an error, return false.
  
  @param void
  
  @return array
  @return boolean