unpickle method
Implementation
@override
DataMapPickle unpickle(ByteBuf buf) {
var dataMap = <ByteBuf, ByteBuf>{};
while (buf.readableBytes > 0) {
var keyLen = buf.readInt32();
var keyData = buf.readBytes(keyLen).asWrappedBuffer;
var valLen = buf.readInt32();
var valData = buf.readBytes(valLen).asWrappedBuffer;
dataMap[keyData] = valData;
}
return DataMapPickle(dataMap);
}