updated phpdocs changes

Author: Shikha Mishra

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

@@ -52,7 +52,7 @@ public function __construct(
     }
 
     /**
-     * @return void
+     * @inheritdoc
      */
     protected function _construct()
     {
@@ -215,8 +215,9 @@ public function getGridJsObjectName()
 
     /**
      * Retrieve JSON string of selected checkboxes
-     *
+     * 
      * @return string
+     * @SuppressWarnings(PHPMD.RequestAwareBlockMethod)
      */
     public function getSelectedJson()
     {
@@ -231,6 +232,7 @@ public function getSelectedJson()
      * Retrieve array of selected checkboxes
      *
      * @return string[]
+     * @SuppressWarnings(PHPMD.RequestAwareBlockMethod)
      */
     public function getSelected()
     {
@@ -252,6 +254,8 @@ public function getApplyButtonHtml()
     }
 
     /**
+     * Get mass action javascript code.
+     *
      * @return string
      */
     public function getJavaScript()
@@ -268,6 +272,8 @@ public function getJavaScript()
     }
 
     /**
+     * Get grid ids in JSON format.
+     *
      * @return string
      */
     public function getGridIdsJson()
@@ -287,6 +293,7 @@ public function getGridIdsJson()
             $allIdsCollection->getSelect()->limit();
             $allIdsCollection->clear();
         }
+        
         $gridIds = $allIdsCollection->setPageSize(0)->getColumnValues($massActionIdField);
         if (!empty($gridIds)) {
             return join(",", $gridIds);
@@ -295,6 +302,8 @@ public function getGridIdsJson()
     }
 
     /**
+     * Get Html id.
+     *
      * @return string
      */
     public function getHtmlId()