50.8. 消息标头

Camel 将 Quartz Execution Context 中的 getters 添加为标头值。以下标头会被添加：
calendar,fireTime,jobDetail,jobInstance,jobRuntTime,mergedJobDataMap,nextFireTime,previousFireTime,refireCount, result, scheduledFireTime,scheduler,trigger,triggerName,triggerGroup.

fireTime 标头包含触发交换时的 java.util.Date。