title: How can a "missing concrete implementation" warning be suppressed?
body: <p>What can I do to prevent the compiler from throwing the following warning </p>
  
  <blockquote>
    <p>Missing concrete implementation of setter 'MyClass.field' and getter
    'MyClass.field'</p>
  </blockquote>
  
  <p>on the following code? </p>
  
  <pre><code>import 'package:mock/mock.dart';
  
  class MyClass {
    String field;
  }
  @proxy
  class MockMyClass extends Mock implements MyClass{}
  </code></pre>