sizeHint method
If possible give a hint of expected size of the encoding.
This method is used inside default implementation of encode
to avoid re-allocations.
Implementation
@override
int sizeHint(SyncState value) {
int size = numberCodec.sizeHint(value.startingBlock);
size += numberCodec.sizeHint(value.currentBlock);
size = numberCodec.sizeHint(value.highestBlock);
return size;
}