json - What does &(0,1) mean in jolt transformation?

Question

Here (click Convert 'prefix soup', to nested data item) is example of translating prefix json into nested json.

Interesting string is

"rating-*": "SecondaryRatings.&(0,1)"

I understand that * is regular expression for keys, & somehow refer to value, but what does (0,1) mean in jolt?

Answer 1

请参阅Shiftr java 文档'&' Wilcard中的部分。

Answer 2

//&1意味着上升一个级别，获取该值并将其替换。