SegmentReaderAccess (Lucene 9.7.0 core API)

```
public interface SegmentReaderAccess
```
Access to SegmentReader internals exposed to the test framework.

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  Object getCore(SegmentReader segmentReader)

- Method Detail
  - getCore
```
Object getCore(SegmentReader segmentReader)
```
    Returns:
    
    Returns the package-private SegmentCoreReaders associated with the segment reader. We don't use the actual type anywhere, so just return it as an object, without type.