private static void send(@NotNull ProcessHandler processHandler, @NotNull String command) {
    final OutputStream outputStream = processHandler.getProcessInput();
    assert outputStream != null : "output stream is null";
    final Charset charset = processHandler instanceof BaseOSProcessHandler
                            ? ((BaseOSProcessHandler)processHandler).getCharset()
                            : null;
    byte[] bytes = (command + "\n").getBytes(charset != null ? charset : StandardCharsets.UTF_8);
    try {
      outputStream.write(bytes);
      outputStream.flush();
    }
    catch (IOException e) {
      LOG.warn(e);
    }
  }
private static void send(@NotNull ProcessHandler processHandler, @NotNull String command)