code: public static String getCredentialStringOutput(HTTP http) {
          if (http == null || !http.useCredentials()) {
              return "";
          }
          StringBuilder credentials = new StringBuilder();
          String uuid = getUUID();
          credentials.append(ONCLICK_TOGGLE).append(uuid).append("\")'>Toggle Credentials</a> ");
          credentials.append(SPAN_ID).append(uuid).append(DISPLAY_NONE);
          credentials.append("<div><i>");
          credentials.append("Username: ");
          credentials.append(http.getUser());
          credentials.append("</div><div>");
          credentials.append("Password: ");
          credentials.append(http.getPass());
          credentials.append("</i></div>");
          credentials.append(END_SPAN);
          return credentials.toString();
      }
docs: Looks for the simple login credentials, username and password, and if
  they are both set, turns that into a string which will be formatted for
  HTML to be printed into the output file
  
  @param http - the http object that is making the call
  @return String: an HTML formatted string with the username and password -
  if they are both set