code: public <T> UiSelector className(Class<T> type) {
          return buildSelector(SELECTOR_CLASS, type.getName());
      }
docs: Set the search criteria to match the class property
  for a widget (for example, "android.widget.Button").
  
  @param <T>  type
  @param type type
  
  @return UiSelector with the specified search criteria
  
  @since API Level 17