docs: function(callback) {
        if(typeof method !== 'undefined') {
          method = service.getMethod(method);
          CommonUtil.header(grunt, 'Method: ' + method.name);
          callback();
        } else {
          CommonUtil.header(grunt, 'Method Selection');
          RunUtil.promptMethod(service, function(err, m) {
            method = m;
            callback();
          });
        }
      }