/// Do BeginBlock and return the guard that will call EndBlock automatically on destruction.
/// Return null block in case of error.
ArchiveBlock OpenBlock(string name, uint sizeHint, bool safe, ArchiveBlockType type)
{
bool opened = BeginBlock(name, ref sizeHint, safe, type);
return(opened ? new ArchiveBlock(this, sizeHint) : new ArchiveBlock());
}
/// Do BeginBlock and return the guard that will call EndBlock automatically on destruction.
ArchiveBlock OpenBlock(string name, uint sizeHint, bool safe, ArchiveBlockType type)
{
BeginBlock(name, ref sizeHint, safe, type);
return(new ArchiveBlock(this, sizeHint));
}