@NotNull
  private static String getIndentString(@NotNull Editor editor, int offset, boolean shouldExpand) {
    CodeStyleSettings settings = CodeStyle.getSettings(editor);
    CommonCodeStyleSettings.IndentOptions indentOptions = settings.getIndentOptions(ShFileType.INSTANCE);
    CharSequence docChars = editor.getDocument().getCharsSequence();

    String baseIndent = "";
    if (offset > 0) {
      int indentStart = CharArrayUtil.shiftBackwardUntil(docChars, offset, "\n") + 1;
      if (indentStart >= 0) {
        int indentEnd = CharArrayUtil.shiftForward(docChars, indentStart, " \t");
        int diff = indentEnd - indentStart;
        if (diff > 0) {
          if (shouldExpand) {
            baseIndent = docChars.subSequence(indentStart, indentEnd).toString();
          }
          else {
            if (diff >= indentOptions.INDENT_SIZE) {
              baseIndent = docChars.subSequence(indentStart, indentEnd - indentOptions.INDENT_SIZE).toString();
            }
          }
        }
      }
    }
    if (shouldExpand) {
      baseIndent += new IndentInfo(0, indentOptions.INDENT_SIZE, 0).generateNewWhiteSpace(indentOptions);
    }
    return baseIndent;
  }
@NotNull
  private static String getIndentString(@NotNull Editor editor, int offset, boolean shouldExpand)