code: func (id ULID) String() string {
  	ulid := make([]byte, EncodedSize)
  	_ = id.MarshalTextTo(ulid)
  	return string(ulid)
  }
docs: // String returns a lexicographically sortable string encoded ULID
  // (26 characters, non-standard base 32) e.g. 01AN4Z07BY79KA1307SR9X4MV3
  // Format: tttttttttteeeeeeeeeeeeeeee where t is time and e is entropy