code: public String format(String comment, int indentLevel, CommentLocation commentLocation) {
  
          // Return if there's nothing to do
          if (comment == null) {
              return null;
          }
  
          final StringBuilder indentString = new StringBuilder();
          for (int i = 0; i < indentLevel; i++) {
              indentString.append("    ");
          }
  
          // Comment ends with newline
          boolean endsWithNewline = (comment.endsWith("\r\n") || comment.endsWith("\n"));
  
          List<String> matchList = new ArrayList<String>();
          Matcher regexMatcher = commentFormattingRegex.matcher(comment);
          while (regexMatcher.find()) {
              matchList.add(regexMatcher.group());
          }
  
          StringBuilder builder = new StringBuilder();
  
          for (int i = 0; i < matchList.size(); i++) {
  
              String indent;
              String newline;
  
              if (commentLocation.equals(CommentLocation.END)) {
                  indent = " ";
                  newline = "";
              } else {
                  indent = indentString.toString();
                  newline = "\n";
              }
  
              // We need to handle the last newline
              if (i == 0) {
                  builder.append(indent + matchList.get(i).trim() + newline);
              } else if (i == matchList.size() - 1) {
                  builder.append(indent + " " + matchList.get(i).trim() + (endsWithNewline ? newline : ""));
              } else {
                  builder.append(indent + " " + matchList.get(i).trim() + newline);
              }
          }
  
          return builder.toString();
      }
docs: Format a given comment string with the indent level specified.
  
  @param comment
  @param indentLevel
  @return