src/main/java/org/plumelib/bcelutil/SimpleLog.java
private String getIndentString() {
    assert enabled;
    if (indentString == null) {
      for (int i = indentStrings.size(); i <= indentLevel; i++) {
        indentStrings.add(indentStrings.get(i - 1) + INDENT_STR_ONE_LEVEL);
      }
      indentString = indentStrings.get(indentLevel);
    }
    return indentString;
  }
private String getIndentString() {
    assert enabled;
    if (indentString == null) {
      for (int i = indentStrings.size(); i <= indentLevel; i++) {
        indentStrings.add(indentStrings.get(i - 1) + INDENT_STR_ONE_LEVEL);
      }
      indentString = indentStrings.get(indentLevel);
    }
    return indentString;
  }
Return the current indentation string.