commit 49ebd8f2169778e0c52563d1ee7d671a1a1bc92f
Author: Pasan Gamage <pasan.gamage@previousnext.com.au>
Date:   Wed Jun 21 12:42:41 2017 +1000

    RelatedSearchesBlock class

diff --git a/src/Plugin/Block/RelatedSearchesBlock.php b/src/Plugin/Block/RelatedSearchesBlock.php
new file mode 100644
index 0000000..88919b5
--- /dev/null
+++ b/src/Plugin/Block/RelatedSearchesBlock.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Drupal\google_appliance\Plugin\Block;
+
+use Drupal\Core\Block\BlockBase;
+
+/**
+ * Provides a 'Google Appliance Related Search' block.
+ *
+ * @Block(
+ *   id = "google_appliance_related_search",
+ *   admin_label = @Translation("Google Appliance Related Searches"),
+ *   category = @Translation("Search")
+ * )
+ */
+
+class RelatedSearchesBlock extends BlockBase{
+
+  /**
+   * {@inheritdoc}
+   */
+  public function build() {
+    $searcher = \Drupal::service('google_appliance.search');
+    $routeMatch = \Drupal::service('current_route_match');
+    $query = $routeMatch->getParameter('search_query');
+    $results = $searcher->getRelatedSearches($query);
+    return ['#theme' => 'item_list', '#items' => $results];
+  }
+
+  public function getCacheContexts() {
+    return array_merge(parent::getCacheContexts(), ['url']);
+  }
+
+}