reafactoring, declare empty array variable

Author: Nazar65

app/code/Magento/Search/Block/Term.php

@@ -9,13 +9,17 @@
  */
 namespace Magento\Search\Block;
 
+use Magento\Framework\DataObject;
+use Magento\Framework\Exception\NoSuchEntityException;
 use Magento\Framework\UrlFactory;
 use Magento\Framework\UrlInterface;
 use Magento\Framework\View\Element\Template;
 use Magento\Framework\View\Element\Template\Context;
 use Magento\Search\Model\ResourceModel\Query\CollectionFactory;
 
 /**
+ * Terms and conditions block
+ *
  * @api
  * @since 100.0.2
  */
@@ -71,17 +75,17 @@ public function __construct(
      * Load terms and try to sort it by names
      *
      * @return $this
-     * @throws \Magento\Framework\Exception\NoSuchEntityException
+     * @throws NoSuchEntityException
      */
     protected function _loadTerms()
     {
         if (empty($this->_terms)) {
             $this->_terms = [];
-            $terms = $this->_queryCollectionFactory->create()->setPopularQueryFilter(
-                $this->_storeManager->getStore()->getId()
-            )->setPageSize(
-                100
-            )->load()->getItems();
+            $terms = $this->_queryCollectionFactory->create()
+                ->setPopularQueryFilter($this->_storeManager->getStore()->getId())
+                ->setPageSize(100)
+                ->load()
+                ->getItems();
 
             if (count($terms) == 0) {
                 return $this;
@@ -91,6 +95,7 @@ protected function _loadTerms()
             $this->_minPopularity = end($terms)->getPopularity();
             $range = $this->_maxPopularity - $this->_minPopularity;
             $range = $range == 0 ? 1 : $range;
+            $termKeys = [];
             foreach ($terms as $term) {
                 if (!$term->getPopularity()) {
                     continue;
@@ -112,8 +117,10 @@ protected function _loadTerms()
     }
 
     /**
+     * Load and return terms
+     *
      * @return array
-     * @throws \Magento\Framework\Exception\NoSuchEntityException
+     * @throws NoSuchEntityException
      */
     public function getTerms()
     {
@@ -122,10 +129,12 @@ public function getTerms()
     }
 
     /**
-     * @param \Magento\Framework\DataObject $obj
+     * Return search url
+     *
+     * @param DataObject $obj
      * @return string
      */
-    public function getSearchUrl($obj)
+    public function getSearchUrl(DataObject $obj)
     {
         /** @var $url UrlInterface */
         $url = $this->_urlFactory->create();
@@ -138,6 +147,8 @@ public function getSearchUrl($obj)
     }
 
     /**
+     * Return max popularity
+     *
      * @return int
      */
     public function getMaxPopularity()
@@ -146,6 +157,8 @@ public function getMaxPopularity()
     }
 
     /**
+     * Return min popularity
+     *
      * @return int
      */
     public function getMinPopularity()