Lucene.Net.Codecs.BlockTerms.BlockTermsReader.ReadHeader C# (CSharp) Method

        private int ReadHeader(DataInput input)
        {
            var version = CodecUtil.CheckHeader(input, BlockTermsWriter.CODEC_NAME,
                BlockTermsWriter.VERSION_START,
                BlockTermsWriter.VERSION_CURRENT);

            if (version < BlockTermsWriter.VERSION_APPEND_ONLY)
                _dirOffset = input.ReadLong();

            return version;
        }