@Override
              public Void answer(InvocationOnMock invocation) throws Throwable {
                if (callback.get() != null) {
                  callback.get().onDraw();
                }
                return null;
              }
Stubs setVisibilityCallback methods.

@param drawable drawable to stub methods of
drawee/src/test/java/com/facebook/drawee/drawable/DrawableTestUtils.java