Revert "cleanup"

This reverts commit ee77cee.

Author: jimczi

server/src/main/java/org/elasticsearch/index/codec/vectors/es818/DirectIOLucene99FlatVectorsReader.java

@@ -192,6 +192,11 @@ private static IndexInput openDataInput(
         }
     }
 
+    // only for tests
+    IndexInput getRawVectorsInput() {
+        return vectorData;
+    }
+
     private void readFields(ChecksumIndexInput meta, FieldInfos infos) throws IOException {
         for (int fieldNumber = meta.readInt(); fieldNumber != -1; fieldNumber = meta.readInt()) {
             FieldInfo info = infos.fieldInfo(fieldNumber);

server/src/main/java/org/elasticsearch/index/codec/vectors/es818/ES818BinaryQuantizedVectorsReader.java

@@ -119,6 +119,11 @@ public class ES818BinaryQuantizedVectorsReader extends FlatVectorsReader impleme
         }
     }
 
+    // only for tests
+    FlatVectorsReader getRawVectorsReader() {
+        return rawVectorsReader;
+    }
+
     private void readFields(ChecksumIndexInput meta, FieldInfos infos) throws IOException {
         for (int fieldNumber = meta.readInt(); fieldNumber != -1; fieldNumber = meta.readInt()) {
             FieldInfo info = infos.fieldInfo(fieldNumber);