### Description

We now support storing KNN vectors as part of our indexed data.  These vectors should be included in the disk usage API.
server/src/test/java/org/elasticsearch/action/admin/indices/diskusage/IndexDiskUsageAnalyzerTests.java
}
    }
    public void testCompletionField() throws Exception {
        IndexWriterConfig config = new IndexWriterConfig().setCommitOnClose(true)
            .setUseCompoundFile(false)
            .setCodec(new Lucene92Codec(Lucene92Codec.Mode.BEST_SPEED) {
                @Override
                public PostingsFormat getPostingsFormatForField(String field) {
                    if (field.startsWith("suggest_")) {
                        return new Completion90PostingsFormat(randomFrom(CompletionPostingsFormat.FSTLoadMode.values()));
                    } else {
                        return super.postingsFormat();
                    }
                }
            });
        try (Directory dir = createNewDirectory()) {
            try (IndexWriter writer = new IndexWriter(dir, config)) {
                int numDocs = randomIntBetween(100, 1000);
                for (int i = 0; i < numDocs; i++) {
                    final Document doc = new Document();
                    if (randomDouble() < 0.5) {
                        doc.add(new SuggestField("suggest_1", randomAlphaOfLength(10), randomIntBetween(1, 20)));
                    }
                    doc.add(new SuggestField("suggest_2", randomAlphaOfLength(10), randomIntBetween(1, 20)));
                    writer.addDocument(doc);
                }
            }
            final IndexDiskUsageStats stats = IndexDiskUsageAnalyzer.analyze(testShardId(), lastCommit(dir), () -> {});
            assertFieldStats(
                "suggest_1",