angular5 - 如何在 p 列 PrimeNG 表中显示组？

Question

list:{"oringinData":"sa","oringinDataTime":"23/10/18","types": 
 [{"sId":1,"sdate":"28/3","stuff":[{"TypeId":1,"onetype":[{"id":1,"name":"John 
Doe"},{"id":2,"name":"Don Joeh"}]},{"TypeId":2,"othertype": 
[{"id":2,"company":"A"}]}]},{"sId":2,"sdate":"20/3","stuff": 
[{"TypeId":1,"onetype":[{"id":1,"name":"John F"},{"id":2,"name":"Don E"}]}, 
{"TypeId":2,"othertype":[{"id":2,"company":"D"}]},{"TypeId":3,"othertype": 
[{"id":2,"company":"A"},{"id":2,"company":"B"},{"id":2,"company":"C"}]}]}]}

以上是对象的 JSON 数组，我想在每种类型都需要空白行之后，通过在 PrimeNG 中分组来对表中的行数据进行分组。