code: private static final void indent (final StringBuilder sb, final int indent) {
  
          for (int i = 0; i < indent; i++) {
              sb.append(LOG_OUT_INDENT);
          }
      }
docs: Appends to a given StringBuilder the given indents depending on the indent level.
  
  @param sb StringBuilder to write in.
  @param indent The number (level) of indents.