MetaplexTokenMetaDataProgram.signMetadata constructor
      
      MetaplexTokenMetaDataProgram.signMetadata({ 
    
    
- required SolAddress metadata,
- required SolAddress creator,
Implementation
factory MetaplexTokenMetaDataProgram.signMetadata({
  required SolAddress metadata,
  required SolAddress creator,
}) {
  return MetaplexTokenMetaDataProgram(
      keys: [metadata.toWritable(), creator.toSigner()],
      programId: MetaplexTokenMetaDataProgramConst.programId,
      layout: const MetaplexTokenMetaDataSignMetadataLayout());
}