@Override
                public void run(final Status status) {
                    if (Replicator.this.id != null) {
                        onTimeoutNowReturned(Replicator.this.id, status, request, getResponse(), stopAfterFinish);
                    }
                }
Send log entries to follower, returns true when success, otherwise false and unlock the id.

@param nextSendingIndex next sending index
@return send result.
jraft-core/src/main/java/com/alipay/sofa/jraft/core/Replicator.java