code: function(config) {
          config = OpenLayers.Util.extend(config, {method: "GET"});
          return OpenLayers.Request.issue(config);
      }
docs: APIMethod: GET
  Send an HTTP GET request.  Additional configuration properties are
  documented in the <issue> method, with the method property set
  to GET.
  
  Parameters:
  config - {Object} Object with properties for configuring the request.
  See the <issue> method for documentation of allowed properties.
  This object is modified and should not be reused.
  
  Returns:
  {XMLHttpRequest} Request object.