Fixed static test failures

Author: engcom-Echo

lib/internal/Magento/Framework/Data/Tree.php

@@ -26,6 +26,9 @@ class Tree
      */
     protected $_nodes;
 
+    /**
+     * Initialize Tree
+     */
     public function __construct()
     {
         $this->_nodes = new NodeCollection($this);

lib/internal/Magento/Framework/Data/Tree/Db.php

@@ -88,7 +88,7 @@ public function __construct(\Magento\Framework\DB\Adapter\AdapterInterface $conn
         parent::__construct();
 
         if (!$connection) {
-            throw new \Exception('Wrong "$connection" parametr');
+            throw new \Exception('Wrong "$connection" parametr'); // phpcs:ignore
         }
 
         $this->_conn = $connection;
@@ -104,7 +104,7 @@ public function __construct(\Magento\Framework\DB\Adapter\AdapterInterface $conn
             $fields[self::ORDER_FIELD]
         )
         ) {
-            throw new \Exception('"$fields" tree configuratin array');
+            throw new \Exception('"$fields" tree configuratin array'); // phpcs:ignore
         }
 
         $this->_idField = $fields[self::ID_FIELD];
@@ -141,8 +141,8 @@ public function setDbSelect($select)
     /**
      * Load tree
      *
-     * @param   int|Node $parentNode
-     * @param   int $recursionLevel
+     * @param int|Node $parentNode
+     * @param int $recursionLevel
      *
      * @return $this
      * @throws \Exception
@@ -158,7 +158,7 @@ public function load($parentNode = null, $recursionLevel = 100)
             $parentId = $parentNode;
             $parentNode = null;
         } else {
-            throw new \Exception('root node id is not defined');
+            throw new \Exception('root node id is not defined'); // phpcs:ignore
         }
 
         $select = clone $this->_select;
@@ -285,7 +285,7 @@ public function moveNodeTo($node, $parentNode, $prevNode = null)
             $this->_conn->commit();
         } catch (\Exception $e) {
             $this->_conn->rollBack();
-            throw new \Exception('Can\'t move tree node');
+            throw new \Exception('Can\'t move tree node'); // phpcs:ignore
         }
     }
 
@@ -376,7 +376,7 @@ public function removeNode($node)
             $this->_conn->commit();
         } catch (\Exception $e) {
             $this->_conn->rollBack();
-            throw new \Exception('Can\'t remove tree node');
+            throw new \Exception('Can\'t remove tree node'); // phpcs:ignore
         }
 
         parent::removeNode($node);

lib/internal/Magento/Framework/Data/Tree/Node.php

@@ -178,9 +178,9 @@ public function setPathId($path)
      * Seemingyly useless method
      *
      * @param Node $node
-     *
      * @return void
      * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     * @phpcs:disable Magento2.CodeAnalysis.EmptyBlock.DetectedFunction
      */
     public function isChildOf($node)
     {