I have followed the example given in https://lucene.apache.org/solr/guide/8_2/searching-nested-documents.html#child-doc-transformer. I have _nest_path_ and _root_ fields in my schema.
I want to index nested documents and search over the nested documents. The above link has an example to filter out children matching a particular filter using ChildDocTransformer but it does not return the same result after I tried.