The synopsis section, above, looks almost indistinguishable from any other
use of Sub::Exporter, apart from the use of 'method_installer'. It is
nearly indistinguishable in behavior, too. The only change is that
subroutines exported from Method::Builder into named slots in
Vehicle::Autobot will be wrapped in a subroutine called
'Vehicle::Autobot::transform'. This will insert a named frame into stack
traces to aid in debugging.

More importantly (for the author, anyway), they will not be removed by
namespace::autoclean. This makes the following code work:

package MyLibrary;