MapToMap conversion now works when the target map does not have a
default constructor (as long as a new map copy is not required).
Issue: SPR-9284
Backport-Commit: 38c4393592
MapToMap conversion now works when the target map does not have a
default constructor (as long as a new map copy is not required).
Issue: SPR-9284
Backport-Commit: 38c4393592