code: private <E> boolean isBindable(Bindable<?> attribute, Class<E> elementType)
      {
          return attribute != null && attribute.getBindableJavaType().equals(elementType);
      }
docs: Checks if is bindable.
  
  @param <E>
  the element type
  @param attribute
  the attribute
  @param elementType
  the element type
  @return true, if is bindable