class mapper : object ... endval to_mapper : mapper -> Migrate_parsetree.Ast_410.Ast_mapper.mapperThe resulting mapper is "closed", i.e. methods ignore their first argument.
Ast_mapper_class_410class mapper : object ... endval to_mapper : mapper -> Migrate_parsetree.Ast_410.Ast_mapper.mapperThe resulting mapper is "closed", i.e. methods ignore their first argument.