Scott Euser
--- a/modules/form_mode_theme_switcher/src/Form/FormModeThemeSwitcherForm.php
+++ b/modules/form_mode_theme_switcher/src/Form/FormModeThemeSwitcherForm.php
   * {@inheritdoc}
   */
  public function setSettingsPerEntity(FormStateInterface $form_state, array $form_modes, $entity_type_id) {
-    return FALSE;
--- a/modules/form_mode_theme_switcher/src/Form/FormModeThemeSwitcherForm.php
+++ b/modules/form_mode_theme_switcher/src/Form/FormModeThemeSwitcherForm.php
   * {@inheritdoc}
   */
  public function setSettingsPerEntity(FormStateInterface $form_state, array $form_modes, $entity_type_id) {
-    return FALSE;
  }

  /**
   * {@inheritdoc}
   */
-  public function setSettingsPerFormMode(FormStateInterface $form_state, array $form_mode, $entity_type_id) {
+  public function setSettingsPerFormMode(FormStateInterface $form_state, array $form_mode, $entity_type_id): void {