code: public static void mockStatic(Class<?> classMock, @SuppressWarnings("rawtypes") Answer defaultAnswer) {
          mockStatic(classMock, withSettings().defaultAnswer(defaultAnswer));
      }
docs: Creates class mock with a specified strategy for its answers to
  interactions. It's quite advanced feature and typically you don't need it
  to write decent tests. However it can be helpful when working with legacy
  systems.
  <p>
  It is the default answer so it will be used <b>only when you don't</b>
  stub the method call.
  <p>
  <pre>
  mockStatic(Foo.class, RETURNS_SMART_NULLS);
  mockStatic(Foo.class, new YourOwnAnswer());
  </pre>
  
  @param classMock     class to mock
  @param defaultAnswer default answer for unstubbed methods