### Question:
DynamicFormBuilder extends CanvasBuilder<DynamicForm, DynamicFormBuilder> { public DynamicFormBuilder setAutoFocus(Boolean autoFocus) { instance().setAutoFocus(autoFocus); return me(); } DynamicFormBuilder(DynamicForm instance); static DynamicFormBuilder buildDynamicForm(); DynamicFormBuilder setNumCols(int numCols); DynamicFormBuilder setAutoFocus(Boolean autoFocus); DynamicFormBuilder setFields(FormItem... fields);  }### Answer:
@Test public void test_setsAutoFocus() { dynamicFormBuilder.setAutoFocus(true); verify(dynamicForm).setAutoFocus(true); }
@Test public void test_returnsBuilderWhenSettingAutoFocus() { assertEquals(dynamicFormBuilder, dynamicFormBuilder.setAutoFocus(true)); }