Fix static tests.

Author: nmalevanec

app/code/Magento/Catalog/Model/ResourceModel/AbstractResource.php

@@ -7,6 +7,9 @@
 namespace Magento\Catalog\Model\ResourceModel;
 
 use Magento\Eav\Model\Entity\Attribute\AbstractAttribute;
+use Magento\Eav\Model\Entity\Attribute\Backend\AbstractBackend;
+use Magento\Eav\Model\Entity\Attribute\Frontend\AbstractFrontend;
+use Magento\Eav\Model\Entity\Attribute\Source\AbstractSource;
 
 /**
  * Catalog entity abstract model
@@ -86,16 +89,14 @@ protected function _isApplicableAttribute($object, $attribute)
     /**
      * Check whether attribute instance (attribute, backend, frontend or source) has method and applicable
      *
-     * @param AbstractAttribute|\Magento\Eav\Model\Entity\Attribute\Backend\AbstractBackend
-     * |\Magento\Eav\Model\Entity\Attribute\Frontend\AbstractFrontend
-     * |\Magento\Eav\Model\Entity\Attribute\Source\AbstractSource $instance
+     * @param AbstractAttribute|AbstractBackend|AbstractFrontend|AbstractSource $instance
      * @param string $method
      * @param array $args array of arguments
      * @return boolean
      */
     protected function _isCallableAttributeInstance($instance, $method, $args)
     {
-        if ($instance instanceof \Magento\Eav\Model\Entity\Attribute\Backend\AbstractBackend
+        if ($instance instanceof AbstractBackend
             && ($method == 'beforeSave' || $method == 'afterSave')
         ) {
             $attributeCode = $instance->getAttribute()->getAttributeCode();
@@ -112,6 +113,7 @@ protected function _isCallableAttributeInstance($instance, $method, $args)
 
     /**
      * Retrieve select object for loading entity attributes values
+     *
      * Join attribute store value
      *
      * @param \Magento\Framework\DataObject $object
@@ -244,6 +246,7 @@ protected function _saveAttributeValue($object, $attribute, $value)
 
     /**
      * Check if attribute present for non default Store View.
+     *
      * Prevent "delete" query locking in a case when nothing to delete
      *
      * @param AbstractAttribute $attribute