<BUG>import java.security.NoSuchAlgorithmException;import java.util.ArrayList;import java.util.Collections;import java.util.List;</BUG><CONTEXT>import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.security.DigestOutputStream;import java.security.MessageDigest;<extra_id_0>public final class PatchUtils {</CONTEXT>
import java.text.DateFormat;import java.util.Date;import java.util.List;