Swift: db upgrade/downgrade script

Author: d10c

swift/downgrades/5559b5a367524777b3f6ef3fc285ae81031ca1da/abstract_function_decls.ql

@@ -0,0 +1,5 @@
+class Callable extends @callable {
+  string toString() { result = "" }
+}
+
+query predicate abstract_function_decls(Callable id, string name) { callable_names(id, name) }