docs: private static String spaceCamelCase(String in)
      {
          StringBuilder sb = new StringBuilder(in.length()+5);
          for(int i = 0; i < in.length(); i++)
          {
              char c = in.charAt(i);
              if(Character.isUpperCase(c))
                  sb.append(' ');
              sb.append(c);
          }
          return sb.toString().trim();
      }