18fb70b32f
See also: http://stackoverflow.com/questions/42571812/unsupportedoperationexception-while-building-a-kotlin-project-in-idea 'original' for SamAdapterFunctionScope.MyFunctionDescriptor#doSubstitute should exactly match 'this.original', so we can just provide it by default in SamAdapterFunctionScope.MyFunctionDescriptor#newCopyBuilder.