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diff --git a/web/modules/contrib/ctools/src/Plugin/BlockVariantTrait.php b/web/modules/contrib/ctools/src/Plugin/BlockVariantTrait.php
new file mode 100644
index 000000000..fa0187073
--- /dev/null
+++ b/web/modules/contrib/ctools/src/Plugin/BlockVariantTrait.php
@@ -0,0 +1,130 @@
+<?php
+
+namespace Drupal\ctools\Plugin;
+
+/**
+ * Provides methods for \Drupal\ctools\Plugin\BlockVariantInterface.
+ */
+trait BlockVariantTrait {
+
+  /**
+   * The block manager.
+   *
+   * @var \Drupal\Core\Block\BlockManager
+   */
+  protected $blockManager;
+
+  /**
+   * The plugin collection that holds the block plugins.
+   *
+   * @var \Drupal\ctools\Plugin\BlockPluginCollection
+   */
+  protected $blockPluginCollection;
+
+  /**
+   * @see \Drupal\ctools\Plugin\BlockVariantInterface::getRegionNames()
+   */
+  abstract public function getRegionNames();
+
+  /**
+   * @see \Drupal\ctools\Plugin\BlockVariantInterface::getBlock()
+   */
+  public function getBlock($block_id) {
+    return $this->getBlockCollection()->get($block_id);
+  }
+
+  /**
+   * @see \Drupal\ctools\Plugin\BlockVariantInterface::addBlock()
+   */
+  public function addBlock(array $configuration) {
+    $configuration['uuid'] = $this->uuidGenerator()->generate();
+    $this->getBlockCollection()->addInstanceId($configuration['uuid'], $configuration);
+    return $configuration['uuid'];
+  }
+
+  /**
+   * @see \Drupal\ctools\Plugin\BlockVariantInterface::removeBlock()
+   */
+  public function removeBlock($block_id) {
+    $this->getBlockCollection()->removeInstanceId($block_id);
+    return $this;
+  }
+
+  /**
+   * @see \Drupal\ctools\Plugin\BlockVariantInterface::updateBlock()
+   */
+  public function updateBlock($block_id, array $configuration) {
+    $existing_configuration = $this->getBlock($block_id)->getConfiguration();
+    $this->getBlockCollection()->setInstanceConfiguration($block_id, $configuration + $existing_configuration);
+    return $this;
+  }
+
+  /**
+   * @see \Drupal\ctools\Plugin\BlockVariantInterface::getRegionAssignment()
+   */
+  public function getRegionAssignment($block_id) {
+    $configuration = $this->getBlock($block_id)->getConfiguration();
+    return isset($configuration['region']) ? $configuration['region'] : NULL;
+  }
+
+  /**
+   * @see \Drupal\ctools\Plugin\BlockVariantInterface::getRegionAssignments()
+   */
+  public function getRegionAssignments() {
+    // Build an array of the region names in the right order.
+    $empty = array_fill_keys(array_keys($this->getRegionNames()), []);
+    $full = $this->getBlockCollection()->getAllByRegion();
+    // Merge it with the actual values to maintain the ordering.
+    return array_intersect_key(array_merge($empty, $full), $empty);
+  }
+
+  /**
+   * @see \Drupal\ctools\Plugin\BlockVariantInterface::getRegionName()
+   */
+  public function getRegionName($region) {
+    $regions = $this->getRegionNames();
+    return isset($regions[$region]) ? $regions[$region] : '';
+  }
+
+  /**
+   * Gets the block plugin manager.
+   *
+   * @return \Drupal\Core\Block\BlockManager
+   *   The block plugin manager.
+   */
+  protected function getBlockManager() {
+    if (!$this->blockManager) {
+      $this->blockManager = \Drupal::service('plugin.manager.block');
+    }
+    return $this->blockManager;
+  }
+
+  /**
+   * Returns the block plugins used for this display variant.
+   *
+   * @return \Drupal\Core\Block\BlockPluginInterface[]|\Drupal\ctools\Plugin\BlockPluginCollection
+   *   An array or collection of configured block plugins.
+   */
+  protected function getBlockCollection() {
+    if (!$this->blockPluginCollection) {
+      $this->blockPluginCollection = new BlockPluginCollection($this->getBlockManager(), $this->getBlockConfig());
+    }
+    return $this->blockPluginCollection;
+  }
+
+  /**
+   * Returns the UUID generator.
+   *
+   * @return \Drupal\Component\Uuid\UuidInterface
+   */
+  abstract protected function uuidGenerator();
+
+  /**
+   * Returns the configuration for stored blocks.
+   *
+   * @return array
+   *   An array of block configuration, keyed by the unique block ID.
+   */
+  abstract protected function getBlockConfig();
+
+}