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diff --git a/web/core/modules/workflows/src/Plugin/WorkflowTypeTransitionFormBase.php b/web/core/modules/workflows/src/Plugin/WorkflowTypeTransitionFormBase.php
new file mode 100644
index 000000000..e1d619644
--- /dev/null
+++ b/web/core/modules/workflows/src/Plugin/WorkflowTypeTransitionFormBase.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace Drupal\workflows\Plugin;
+
+use Drupal\Component\Plugin\PluginAwareInterface;
+use Drupal\Component\Plugin\PluginInspectionInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Plugin\PluginFormInterface;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+
+/**
+ * A base class for workflow type transition forms.
+ */
+abstract class WorkflowTypeTransitionFormBase implements PluginFormInterface, PluginAwareInterface {
+
+  use StringTranslationTrait;
+
+  /**
+   * The workflow type.
+   *
+   * @var \Drupal\workflows\WorkflowTypeInterface
+   */
+  protected $workflowType;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setPlugin(PluginInspectionInterface $plugin) {
+    $this->workflowType = $plugin;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
+    $values = $form_state->getValues();
+    $transition = $form_state->get('transition');
+    $configuration = $this->workflowType->getConfiguration();
+    $configuration['transitions'][$transition->id()] = $values + $configuration['transitions'][$transition->id()];
+    $this->workflowType->setConfiguration($configuration);
+  }
+
+}