private boolean isCustomSshExecutableConfigured() {
    String sshCommand = readSshCommand();
    String command = StringUtil.trim(StringUtil.unquoteString(StringUtil.notNullize(sshCommand)));
    // do not treat 'ssh -vvv' as custom executable
    return !command.isEmpty() && !command.startsWith("ssh ");
  }
private boolean isCustomSshExecutableConfigured()