MAGETWO-95809: Item row total display incorrect value in API response

- Stabilize static tests.

Author: YuliyaLabudova

app/code/Magento/Sales/Block/Order/Item/Renderer/DefaultRenderer.php

@@ -48,6 +48,8 @@ public function __construct(
     }
 
     /**
+     * Set item.
+     *
      * @param \Magento\Framework\DataObject $item
      * @return $this
      */
@@ -58,6 +60,8 @@ public function setItem(\Magento\Framework\DataObject $item)
     }
 
     /**
+     * Get item.
+     *
      * @return array|null
      */
     public function getItem()
@@ -76,6 +80,8 @@ public function getOrder()
     }
 
     /**
+     * Get order item.
+     *
      * @return array|null
      */
     public function getOrderItem()
@@ -88,6 +94,8 @@ public function getOrderItem()
     }
 
     /**
+     * Get item options.
+     *
      * @return array
      */
     public function getItemOptions()