Position Order-Class in Custom CSS Selector

[dtcblyth]

Related Thread: https://discord.com/channels/1041765492907589683/1094823370895401073

Background:

In D4 the module order-class was automatically prepended to the Custom CSS selector. For example, the code below would output something like: .my_module_0 .my_heading { ... }.

$this->custom_css_fields = array(
  ...
  'my_heading' => array(
    'label'.   => esc_html__('Heading', 'my-module'),
    'selector' => '.my_heading',
  ),
  ...
),

To achieve the same result in D5 we can do something like this in the module.json file:

"customCssFields": {
  ...
  "myHeading": {
    "subName":        "myHeading",
    "selectorSuffix": " .my_heading"
  },
  ...
}

Problem:

In D4 we also had the ability to set the position of the order-class in the selector by using the %%order_class%% placeholder. Like this:

$this->custom_css_fields = array(
  ...
  'my_heading' => array(
    'label'.   => esc_html__('Heading', 'my-module'),
    'selector' => 'div%%order_class%% .my_heading',
  ),
  ...
),

As far as I know, it is not currently possible to recreate this behaviour in D5?