code: public function downloadTraceMetadetails($id, $username, $password)
  	{
  		// Set the API base
  		$base = 'gpx/' . $id . '/details';
  
  		// Build the request path.
  		$path = $this->getOption('api.url') . $base;
  
  		// Send the request.
  		return $this->sendRequest($path, 'GET', array('Authorization' => 'Basic ' . base64_encode($username . ':' . $password)));
  	}
docs: Method to download Trace details
  
  @param   integer  $id        Trace identifier
  @param   string   $username  Username
  @param   string   $password  Password
  
  @return  array  The XML response
  
  @since   1.0