Creates `reflectors`, as a meta-meta feature that enables dynamic selection of a "mirror system".

test_reflectable/test/meta_reflectors_domain.dart

Index: test_reflectable/test/meta_reflectors_domain.dart
diff --git a/test_reflectable/test/meta_reflectors_domain.dart b/test_reflectable/test/meta_reflectors_domain.dart
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+// Copyright (c) 2015, the Dart Team. All rights reserved. Use of this
+// source code is governed by a BSD-style license that can be found in
+// the LICENSE file.
+
+/// File being transformed by the reflectable transformer.
+/// Part of the entry point 'meta_reflectors_test.dart'.
+///
+/// Independence: The "domain classes" `M1`..`M3`, `A`..`D`, `P` are assumed to
+/// be specific to the particular entry point 'meta_reflectors_test.dart' and
+/// its transitive closure, but there is no dependency from them to any of the
+/// libraries introducing or using reflectable reflection.
+library test_reflectable.test.meta_reflectors_share;
+
+class P {
+  const P();
+}
+
+@P()
+class M1 {
+  foo() {}
+  var field;
+  static staticFoo(x) {}
+}
+
+class M2 {}
+
+class M3 {}
+
+class A {
+  foo() {}
+  var field;
+  static staticFoo(x) {}
+  static staticBar() {}
+}
+
+class B extends A with M1 {}
+
+class C extends B with M2, M3 {}
+
+class D = A with M1;