code: public static void copy(InputStream is, OutputStream os) throws IOException {
          copy(is, os, true);
      }
docs: Copies all data from the given input stream to the given output stream and closes the streams. Convenience
  method, same as <code>copy(is, os, true)</code>.
  
  @param is
  the input stream.
  @param os
  the output stream.
  
  @throws IOException
  if an I/O error occurs.
  @see #copy(InputStream, OutputStream, boolean)