ifdef NoNanoHTTPD
static virtual NanoHTTPD.Response serveFile(File file) {
  ret subBot_serveFile(file);
}

static virtual NanoHTTPD.Response serveFile(File file, S mimeType) {
  ret subBot_serveFile(file, mimeType);
}
endifdef

ifndef NoNanoHTTPD
static NanoHTTPD.Response serveFile(File file) {
  ret serveFile(file, "application/octet-stream");
}

static NanoHTTPD.Response serveFile(File file, S mimeType) ctex {
  ret NanoHTTPD.newFixedLengthResponse(NanoHTTPD.Status.OK, mimeType, newFileInputStream(file), file.length());
}
endifndef