docs: function(id) {
              // Stop javascript timer & remove from timer list
              if (id && timers[id]) {
                  if (timers[id] != "iOS") {
                      clearInterval(timers[id]);
                  } else {
                      // is iOS watch by filter so call into device to stop
                      exec(null, null, "Compass", "stopHeading", []);
                  }
                  delete timers[id];
              }
          }