private void testHeadBlobWithReservedMetadataId(BlobInfo blobInfo) throws Exception {
    RestResponseChannel responseChannel = testHeadBlob(blobInfo, null);
    Assert.assertEquals("Reserved metadata id mismatch", blobInfo.getBlobProperties().getReservedMetadataBlobId(),
        responseChannel.getHeader(RestUtils.Headers.RESERVED_METADATA_ID));
  }
Tests {@link AmbrySecurityService#processResponse(RestRequest, RestResponseChannel, BlobInfo, Callback)} for
{@link RestMethod#HEAD} and reserved metadata blob id.
@param blobInfo the {@link BlobInfo} of the blob for which {@link RestMethod#HEAD} is required.
@throws Exception
ambry-frontend/src/test/java/com/github/ambry/frontend/AmbrySecurityServiceTest.java