code: func Dot(key string) OpFunc {
  	key = strings.TrimSpace(key)
  	if key == "" {
  		return func(in []byte) ([]byte, error) { return in, nil }
  	}
  
  	k := []byte(key)
  
  	return func(in []byte) ([]byte, error) {
  		return scanner.FindKey(in, 0, k)
  	}
  }
docs: // Dot extract the specific key from the map provided; to extract a nested value, use the Dot Op in conjunction with the
  // Chain Op