docs: private void appendLine(final String timeStampStr, final int indentLevel, final String line,
              final StringBuilder buf) {
          buf.append(timeStampStr);
          buf.append('\t');
          buf.append(ClassGraph.class.getSimpleName());
          buf.append('\t');
          final int numDashes = 2 * (indentLevel - 1);
          for (int i = 0; i < numDashes; i++) {
              buf.append('-');
          }
          if (numDashes > 0) {
              buf.append(' ');
          }
          buf.append(line);
          buf.append('\n');
      }