Verify that a List is valid before unboxing arguments
Verify that a List is valid before unboxing arguments

This used to be done by get_type() but that's now a trivial getter.

realm/realm-object-store,realm/realm-core,realm/realm-object-store,realm/realm-object-store,realm/realm-core,realm/realm-core,realm/realm-core,realm/realm-core,realm/realm-core,realm/realm-core