flw.js
function _flw_stop(reason, cb) {
      if (!cb && typeof reason === 'function') {
        cb = reason;
        reason = 'stopped';
      }
      c._stopped = reason;
      return cb();
    }
function _flw_stop(reason, cb) {
      if (!cb && typeof reason === 'function') {
        cb = reason;
        reason = 'stopped';
      }
      c._stopped = reason;
      return cb();
    }
function _flw_stop ( reason , cb ) { if ( ! cb && typeof reason === 'function' ) { cb = reason ; reason = 'stopped' ; } c . _stopped = reason ; return cb ( ) ; }
Indicate that we gracefully stop if set, stops the flow until we are back to the main callback
Indicate that we gracefully stop if set stops the flow until we are back to the main callback