James LeMosy
--- a/src/OptionBase.php
+++ b/src/OptionBase.php
      '#description' => $this->t($def['description']),
      '#type' => 'select',
      '#options' => $this->translateOptions($def['options']),
-      '#empty_option' => $this->t('- None -'),
-      '#empty_value' => '',
      '#default_value' => $default,
    ];
    if ($def['multi']) {
      $formRenderArray['#multiple'] = TRUE;
    }
+    if (isset($def['required'])) {
+      $formRenderArray['#required'] = $def['required'];
+    }
+    else {
+      $emptyOption = !empty($def['empty_option']) ? $def['empty_option'] : '- None -';