decode method
Implementation
@override
SignedExtensionMetadata decode(Input input) {
final identifier = StrCodec.codec.decode(input);
final type = CompactCodec.codec.decode(input);
final additionalSigned = CompactCodec.codec.decode(input);
return SignedExtensionMetadata(
identifier: identifier,
type: type,
additionalSigned: additionalSigned,
);
}