TypoScript based flux settings for an FE plugin (esp. controllerActions)

ext_tables.php

<?php

// enable pi_flexform for flux via typoscript on FE plugins
$TCA['tt_content']['types']['list']['subtypes_addlist']['myextension_myplugin'] = 'pi_flexform';

?>

FluxSettingsProviderForMyPlugin.ts

plugin.tx_flux.providers {
  myextension_myplugin {
    tableName = tt_content
    fieldName = pi_flexform
    listType = myextension_myplugin
    extensionKey = Vendor.MyPlugin
    form {
      fields {
        switchableControllerActions {
          label = Plugin Mode
          name = switchableControllerActions
          type = controllerActions
          extensionName = Vendor.MyExtension
          pluginName = MyController
          actions {
            MyController = list,accordion,show
          }
          subActions {
            MyController {
              list = show
              accordion = show
            }
          }
          requestUpdate = 1
        }
      }
    }
  }
}