private static void append(StringBuilder sb, String name, ImageCapabilities capabilities) {
    if (capabilities != null) {
      sb.append(name).append(": accelerated=").append(capabilities.isAccelerated());
      if (capabilities.isTrueVolatile()) {
        sb.append("; true volatile");
      }
      sb.append("\n");
    }
  }
private static void append(StringBuilder sb, String name, ImageCapabilities capabilities)