File list (Check if you may need any files):
mg4j-2.1.2
..........\build.properties
..........\build.xml
..........\CHANGES
..........\COPYING.LIB
..........\java
..........\....\it
..........\....\..\unimi
..........\....\..\.....\dsi
..........\....\..\.....\...\mg4j
..........\....\..\.....\...\....\compression
..........\....\..\.....\...\....\...........\CanonicalFast64CodeWordDecoder.java
..........\....\..\.....\...\....\...........\Codec.java
..........\....\..\.....\...\....\...........\CodedCharSequenceBooleanIterator.java
..........\....\..\.....\...\....\...........\Coder.java
..........\....\..\.....\...\....\...........\CodeWordCoder.java
..........\....\..\.....\...\....\...........\Decoder.java
..........\....\..\.....\...\....\...........\Fast64CodeWordCoder.java
..........\....\..\.....\...\....\...........\HuffmanCodec.java
..........\....\..\.....\...\....\...........\HuTuckerCodec.java
..........\....\..\.....\...\....\...........\PrefixCodec.java
..........\....\..\.....\...\....\...........\PrefixCoder.java
..........\....\..\.....\...\....\...........\TreeDecoder.java
..........\....\..\.....\...\....\document
..........\....\..\.....\...\....\........\AbstractDocument.java
..........\....\..\.....\...\....\........\AbstractDocumentCollection.java
..........\....\..\.....\...\....\........\AbstractDocumentFactory.java
..........\....\..\.....\...\....\........\AbstractDocumentIterator.java
..........\....\..\.....\...\....\........\AbstractDocumentSequence.java
..........\....\..\.....\...\....\........\CompositeDocumentFactory.java
..........\....\..\.....\...\....\........\CompositeDocumentSequence.java
..........\....\..\.....\...\....\........\CSVDocumentCollection.java
..........\....\..\.....\...\....\........\DispatchingDocumentFactory.java
..........\....\..\.....\...\....\........\Document.java
..........\....\..\.....\...\....\........\DocumentCollection.java
..........\....\..\.....\...\....\........\DocumentFactory.java
..........\....\..\.....\...\....\........\DocumentIterator.java
..........\....\..\.....\...\....\........\DocumentSequence.java
..........\....\..\.....\...\....\........\FileSetDocumentCollection.java
..........\....\..\.....\...\....\........\HtmlDocumentFactory.java
..........\....\..\.....\...\....\........\IdentityDocumentFactory.java
..........\....\..\.....\...\....\........\InputStreamDocumentSequence.java
..........\....\..\.....\...\....\........\JavamailDocumentCollection.java
..........\....\..\.....\...\....\........\JdbcDocumentCollection.java
..........\....\..\.....\...\....\........\package.html
..........\....\..\.....\...\....\........\PdfDocumentFactory.java
..........\....\..\.....\...\....\........\PropertyBasedDocumentFactory.java
..........\....\..\.....\...\....\........\ReplicatedDocumentFactory.java
..........\....\..\.....\...\....\........\TRECDocumentCollection.java
..........\....\..\.....\...\....\........\TRECHeaderDocumentFactory.java
..........\....\..\.....\...\....\........\WikipediaDocumentCollection.java
..........\....\..\.....\...\....\........\ZipDocumentCollection.java
..........\....\..\.....\...\....\........\ZipDocumentCollectionBuilder.java
..........\....\..\.....\...\....\index
..........\....\..\.....\...\....\.....\AbstractBitStreamIndexWriter.java
..........\....\..\.....\...\....\.....\AbstractIndexIterator.java
..........\....\..\.....\...\....\.....\AbstractIndexReader.java
..........\....\..\.....\...\....\.....\AbstractPrefixMap.java
..........\....\..\.....\...\....\.....\AbstractTermMap.java
..........\....\..\.....\...\....\.....\BitStreamHPIndex.java
..........\....\..\.....\...\....\.....\BitStreamHPIndexReader.c
..........\....\..\.....\...\....\.....\BitStreamHPIndexReader.java
..........\....\..\.....\...\....\.....\BitStreamHPIndexWriter.java
..........\....\..\.....\...\....\.....\BitStreamIndex.java
..........\....\..\.....\...\....\.....\BitStreamIndexReader.c
..........\....\..\.....\...\....\.....\BitStreamIndexReader.java
..........\....\..\.....\...\....\.....\BitStreamIndexWriter.java
..........\....\..\.....\...\....\.....\CachingOutputBi