private @Nullable String readWslOutputLine(@NotNull WSLCommandLineOptions options,
                                             @NotNull GeneralCommandLine commandLine,
                                             @Nullable ProgressIndicator pi) {
    List<String> pwdOutputLines = readWslOutput(options, commandLine, pi);
    if (pwdOutputLines == null) return null;
    if (pwdOutputLines.size() != 1) {
      LOG.warn("One line response expected: " +
               "[id=" + getId() + "; " +
               "stdout=" + pwdOutputLines + "]");
      return null;
    }

    return pwdOutputLines.get(0).trim();
  }
private @Nullable String readWslOutputLine(@NotNull WSLCommandLineOptions options,
                                             @NotNull GeneralCommandLine commandLine,
                                             @Nullable ProgressIndicator pi)