Function createUpdateMetadataAuthorityInstruction

createUpdateMetadataAuthorityInstruction(
    mintInterface: MintInterface,
    currentAuthority: PublicKey,
    newAuthority: PublicKey,
    payer: PublicKey,
    validityProof: ValidityProofWithContext | null,
    extensionIndex?: number,
    maxTopUp?: number,
): TransactionInstruction
Create instruction for updating a light mint's metadata authority.

Output queue is automatically derived from mintInterface.merkleContext.treeInfo (preferring nextTreeInfo.queue if available for rollover support).
Parameters
- mintInterface: MintInterface
  MintInterface from getMintInterface() - must have merkleContext and tokenMetadata
- currentAuthority: PublicKey
  Current metadata update authority public key (must sign)
- newAuthority: PublicKey
  New metadata update authority public key
- payer: PublicKey
  Fee payer public key
- validityProof: ValidityProofWithContext | null
  Validity proof for the light mint (null for decompressed light mints)
- extensionIndex: number = 0
  Extension index (default: 0)
- OptionalmaxTopUp: number
  Optional cap on rent top-up (units of 1k lamports; default no cap)
Returns TransactionInstruction
- Defined in v3/instructions/update-metadata.ts:314