tboeghk opened a new pull request, #2310:
URL: https://github.com/apache/solr/pull/2310

   https://issues.apache.org/jira/browse/SOLR-17185
   
   # Description
   
   Opening up the class `ValueAugmenter` in the `ValueAugmenterFactory` to 
`public` access level eases the creation of custom document transformers.
   
   Currently, we have to place our custom document transformers in the 
`org.apache.solr.response.transform` package to be able to access the package 
private `ValueAugmenter`. Changing the visibility to `public` enables building 
custom document transformers very slim and quick like the following one in any 
package:
   
   ```java
   public class CollectionAugmenterFactory extends TransformerFactory {
   
   @Override
   public DocTransformer create(String field, SolrParams params, 
SolrQueryRequest req) { 
     String v = 
ComponentUtils.getCollectionNameFrom(req.getCore()).orElse("[unknown]"); 
     return new ValueAugmenterFactory.ValueAugmenter(field, v); }
   }
   ```
   
   # Solution
   
   Change the visibility of `ValueAugmenter` from package private to `public`.
   
   # Checklist
   
   Please review the following and check all that apply:
   
   - [x] I have reviewed the guidelines for [How to 
Contribute](https://github.com/apache/solr/blob/main/CONTRIBUTING.md) and my 
code conforms to the standards described there to the best of my ability.
   - [x] I have created a Jira issue and added the issue ID to my pull request 
title.
   - [ ] I have given Solr maintainers 
[access](https://help.github.com/en/articles/allowing-changes-to-a-pull-request-branch-created-from-a-fork)
 to contribute to my PR branch. (optional but recommended)
   - [x] I have developed this patch against the `main` branch.
   - [x] I have run `./gradlew check`.
   - [ ] I have added tests for my changes.
   - [ ] I have added documentation for the [Reference 
Guide](https://github.com/apache/solr/tree/main/solr/solr-ref-guide)
   


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