Activiti task claim
claim，认领，领取
claim - 国内版 Bing
https://cn.bing.com/search?FORM=U227DF&PC=U227&q=claim
Activiti进阶（四）——流程变量的设置和获取 - 周江霄 - CSDN博客
https://blog.csdn.net/zjx86320/article/details/50345731
Activiti - 新一代的开源 BPM 引擎
https://www.ibm.com/developerworks/cn/java/j-lo-activiti1/index.html