updateDocument(contract, sender, document, currency)

Feature	Return update did document operation using Document instance to update exist did document.
Parameters	string contract address string sender, document document, //Document instance, which is the return value of the writeDocument method string currencyID
Return Value	object update did document operation

example1. Case of Building Document object

const contract = "0x99e749E6e00fc6BA3E965881589D185cc5B447d4fca";
const sender = "0xe3a93FeDE11D53283091bD639BDd24c59b8B8C60fca";
const currency = "MCC";
const did = "did:mitum:0xe3a93FeDE11D53283091bD639BDd24c59b8B8C60fca";

// 1️⃣ Create authentication key
const auth = mitum.authdid.writeAsymkeyAuth(
  did + "#auth_key",
  "SECP256K1_IMFACT_2025",
  did,
  publicKey
);

// 2️⃣ Build Document via SDK
const doc = mitum.authdid.writeDocument(
  [
    "https://www.w3.org/ns/did/v1",
    "https://imfact.im/did/contexts/v1.jsonld"
  ],
  did,
  [auth],
);

// 3️⃣ Create update operation
const op = mitum.authdid.updateDocument(contract, sender, doc, currency);

// 4️⃣ Sign with private key → send to network