return openInputStream();
            }
          };
    }
  }

  /**
   * Returns a readable {@link ByteSource} view of the data that has been written to this stream.
   *
   * @since 15.0
   */
  public ByteSource asByteSource() {
    return source;
  }

  private synchronized InputStream openInputStream() throws IOException {
    if (file != null) {

 *
 * <p>This class is intended to be used in the following pattern:
 *
 * <pre>{@code
 * Closer closer = Closer.create();
 * try {
 *   InputStream in = closer.register(openInputStream());
 *   OutputStream out = closer.register(openOutputStream());
 *   // do stuff
 * } catch (Throwable e) {
 *   // ensure that any checked exception types other than IOException that could be thrown are