code: func Any(in []byte, pos int) (int, error) {
  	pos, err := skipSpace(in, pos)
  	if err != nil {
  		return 0, err
  	}
  
  	switch in[pos] {
  	case '"':
  		return String(in, pos)
  	case '{':
  		return Object(in, pos)
  	case '.', '-', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0':
  		return Number(in, pos)
  	case '[':
  		return Array(in, pos)
  	case 't', 'f':
  		return Boolean(in, pos)
  	case 'n':
  		return Null(in, pos)
  	default:
  		max := len(in) - pos
  		if max > 20 {
  			max = 20
  		}
  
  		return 0, opErr{
  			pos:     pos,
  			msg:     "invalid object",
  			content: string(in[pos : pos+max]),
  		}
  	}
  }
docs: // Any returns the position of the end of the current element that begins at pos; handles any valid json element