import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.Terms;
import org.apache.lucene.index.TermsEnum;
<BUG>import org.apache.lucene.search.similarities.DefaultSimilarity;
</BUG>
import org.apache.lucene.search.similarities.TFIDFSimilarity;
import java.io.IOException;
import java.util.HashMap;

import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.Terms;
import org.apache.lucene.index.TermsEnum;
import org.apache.lucene.search.similarities.ClassicSimilarity;
import org.apache.lucene.search.similarities.TFIDFSimilarity;
import java.io.IOException;
import java.util.HashMap;
