magento-engcom/import-export-improvements#42: refactor the initImagesArrayKeys to be private and remove the _ in the name

Author: dmanners

app/code/Magento/CatalogImportExport/Model/Import/Product.php

@@ -844,7 +844,7 @@ public function __construct(
         $this->_initAttributeSets()
             ->_initTypeModels()
             ->_initSkus()
-            ->_initImagesArrayKeys();
+            ->initImagesArrayKeys();
         $this->validator->init($this);
     }
 
@@ -1092,7 +1092,7 @@ protected function _initSkus()
      *
      * @return $this
      */
-    protected function _initImagesArrayKeys()
+    private function initImagesArrayKeys()
     {
         $this->_imagesArrayKeys = $this->imageTypeProcessor->getImageTypes();
         return $this;