our @ISA = qw( DBM::Deep::Engine::Sector );
# This is in bytes
-sub size { $_[0]{engine}->data_sector_size }
+sub size {
+ my $e = ref($_[0]) ? $_[0]{engine} : $_[1];
+ return $e->data_sector_size;
+}
sub free_meth { return '_add_free_data_sector' }
sub clone {