MAGETWO-32710: Code micro-optimizations

static test fixes

Author: Serhiy Shkolyarenko

app/code/Magento/Sales/Model/Order/Status/History.php

@@ -15,6 +15,7 @@
  * @method \Magento\Sales\Model\Resource\Order\Status\History _getResource()
  * @method \Magento\Sales\Model\Resource\Order\Status\History getResource()
  * @method \Magento\Sales\Model\Order\Status\History setCreatedAt(string $value)
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  */
 class History extends AbstractModel implements OrderStatusHistoryInterface
 {

dev/tests/functional/lib/Magento/Mtf/Util/Protocol/CurlTransport.php

@@ -116,6 +116,7 @@ public function setConfig($config = [])
      * @param array $headers
      * @param array $params
      * @return void
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function write($method, $url, $httpVer = '1.1', $headers = [], $params = [])
     {

lib/internal/Magento/Framework/App/Area.php

@@ -10,6 +10,8 @@
 
 /**
  * Application area model
+ *
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  */
 class Area implements \Magento\Framework\App\AreaInterface
 {

lib/internal/Magento/Framework/Filesystem/Io/Ftp.php

@@ -153,6 +153,7 @@ public function close()
      * @param int $mode
      * @param bool $recursive
      * @return bool
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function mkdir($dir, $mode = 0777, $recursive = true)
     {
@@ -165,6 +166,7 @@ public function mkdir($dir, $mode = 0777, $recursive = true)
      * @param string $dir
      * @param bool $recursive
      * @return bool
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function rmdir($dir, $recursive = false)
     {
@@ -234,6 +236,7 @@ public function read($filename, $dest = null)
      * @param string|resource $src filename, string data or source stream
      * @param null $mode
      * @return bool
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function write($filename, $src, $mode = null)
     {
@@ -300,6 +303,7 @@ public function chmod($filename, $mode)
      * @param null $grep ignored parameter
      * @return array
      * @SuppressWarnings(PHPMD.ShortMethodName)
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function ls($grep = null)
     {