@Test
  public void testCompositeBlobGetChunkIdsOnly() throws Exception {
    options =
        new GetBlobOptionsInternal(new GetBlobOptionsBuilder().operationType(GetBlobOptions.OperationType.All).build(),
            true, routerMetrics.ageAtGet);

    for (int numChunks = 2; numChunks < 10; numChunks++) {
      blobSize = numChunks * maxChunkSize;
      doPut();
      getAndAssertSuccess();
    }
  }
Test gets of composite blob with getChunkIdsOnly being true.
ambry-router/src/test/java/com/github/ambry/router/GetBlobOperationTest.java