@Test
  public void testDeprecatedMsgTransformation() throws Exception {
    testDeprecatedMsg(Blob_Version_V3, BlobType.DataBlob, MessageFormatRecord.Message_Header_Version_V2);
    testDeprecatedMsg(Blob_Version_V3, BlobType.MetadataBlob, MessageFormatRecord.Message_Header_Version_V2);
    testDeprecatedMsg(Blob_Version_V3, BlobType.DataBlob, MessageFormatRecord.Message_Header_Version_V3);
    testDeprecatedMsg(Blob_Version_V3, BlobType.MetadataBlob, MessageFormatRecord.Message_Header_Version_V3);
  }
Test the case where there are deprecated messages.
@throws Exception
ambry-messageformat/src/test/java/com/github/ambry/messageformat/MessageSievingInputStreamTest.java