code: public static void unzip(final File zipFile, final File destDir) throws IOException {
          unzip(zipFile, destDir, null, null);
      }
docs: Unzips a file into a given directory. WARNING: Only relative path entries are allowed inside the archive!
  
  @param zipFile
  Source ZIP file - Cannot be <code>null</code> and must be a valid ZIP file.
  @param destDir
  Destination directory - Cannot be <code>null</code> and must exist.
  
  @throws IOException
  Error unzipping the file.