ENGCOM-3588: Static tests fix.

Author: p-bystritsky

app/code/Magento/Backend/Block/Widget/Grid/Massaction/AbstractMassaction.php

@@ -7,8 +7,8 @@
 namespace Magento\Backend\Block\Widget\Grid\Massaction;
 
 use Magento\Backend\Block\Widget\Grid\Massaction\VisibilityCheckerInterface as VisibilityChecker;
-use Magento\Framework\DataObject;
 use Magento\Framework\Data\Collection\AbstractDb;
+use Magento\Framework\DataObject;
 
 /**
  * Grid widget massaction block
@@ -53,7 +53,7 @@ public function __construct(
     }
 
     /**
-     * @return void
+     * @inheritdoc
      */
     protected function _construct()
     {
@@ -218,6 +218,7 @@ public function getGridJsObjectName()
      * Retrieve JSON string of selected checkboxes
      *
      * @return string
+     * @SuppressWarnings(PHPMD.RequestAwareBlockMethod)
      */
     public function getSelectedJson()
     {
@@ -232,6 +233,7 @@ public function getSelectedJson()
      * Retrieve array of selected checkboxes
      *
      * @return string[]
+     * @SuppressWarnings(PHPMD.RequestAwareBlockMethod)
      */
     public function getSelected()
     {
@@ -253,6 +255,8 @@ public function getApplyButtonHtml()
     }
 
     /**
+     * Get mass action javascript code.
+     *
      * @return string
      */
     public function getJavaScript()
@@ -269,6 +273,8 @@ public function getJavaScript()
     }
 
     /**
+     * Get grid ids in JSON format.
+     *
      * @return string
      */
     public function getGridIdsJson()
@@ -278,7 +284,7 @@ public function getGridIdsJson()
         }
         /** @var \Magento\Framework\Data\Collection $allIdsCollection */
         $allIdsCollection = clone $this->getParentBlock()->getCollection();
-        
+
         if ($this->getMassactionIdField()) {
             $massActionIdField = $this->getMassactionIdField();
         } else {
@@ -289,7 +295,7 @@ public function getGridIdsJson()
             $allIdsCollection->getSelect()->limit();
             $allIdsCollection->clear();
         }
-        
+
         $gridIds = $allIdsCollection->setPageSize(0)->getColumnValues($massActionIdField);
         if (!empty($gridIds)) {
             return join(",", $gridIds);
@@ -298,6 +304,8 @@ public function getGridIdsJson()
     }
 
     /**
+     * Get Html id.
+     *
      * @return string
      */
     public function getHtmlId()