Specifically, where is the documentation for the `targetName` element's `ns` and `index` variables, and the `params` element? I think that I've read everything relevant in the Adobe Developer UI Components docs, but I see no mention.
These features are used in Modifiers to alter the display of forms, like so:
'arguments' => [
'data' => [
'config' => [
'labelVisible' => true,
'label' => 'Foo',
'formElement' => Container::NAME,
'componentType' => Container::NAME,
'displayAsLink' => false,
'actions' => [
[
'targetName' => 'ns=' . $this->form . ', index=' . $foo,
'actionName' => 'openModal',
],
[
'targetName' => 'ns=' . $this->form . ', index=' . $foo,
'actionName' => 'reloadModal',
'params' => [ $params ],
],
],
],
],
],
Where is the code that reads the return values of the `$this->form`, `$foo`, and `$params` variables?