uri property
uri that points to the data and/or metadata associated with the NFT. This field need not be an HTTP or HTTPS URL; it could be an IPFS URI, a magnet link, immediate data encoded as an RFC2379 "data" URL, or even an opaque issuer-specific encoding. The URI is not checked for validity. This field must be hex-encoded. You can use xrpl.utils.str_to_hex to convert a UTF-8 string to hex.
Implementation
final String? uri;