docs: public File writeToStream(OutputStream out) throws IORuntimeException {
  		FileInputStream in = null;
  		try {
  			in = new FileInputStream(file);
  			IoUtil.copy(in, out);
  		}catch (IOException e) {
  			throw new IORuntimeException(e);
  		} finally {
  			IoUtil.close(in);
  		}
  		return this.file;
  	}