Merge remote-tracking branch 'remotes/github/MAGETWO-91631' into EPAM-PR-40

Author: VeronikaYarats

app/code/Magento/Customer/Block/Widget/Name.php

@@ -55,7 +55,7 @@ public function __construct(
     }
 
     /**
-     * @return void
+     * @inheritdoc
      */
     public function _construct()
     {
@@ -245,10 +245,13 @@ public function getStoreLabel($attributeCode)
      */
     public function getAttributeValidationClass($attributeCode)
     {
-        return $this->_addressHelper->getAttributeValidationClass($attributeCode);
+        $attributeMetadata = $this->_getAttribute($attributeCode);
+        return $attributeMetadata ? $attributeMetadata->getFrontendClass() : '';
     }
 
     /**
+     * Check if attribute is required
+     *
      * @param string $attributeCode
      * @return bool
      */
@@ -259,6 +262,8 @@ private function _isAttributeRequired($attributeCode)
     }
 
     /**
+     * Check if attribute is visible
+     *
      * @param string $attributeCode
      * @return bool
      */