diff --git a/app/code/Magento/Catalog/Model/Product.php b/app/code/Magento/Catalog/Model/Product.php
index 12444c9cce202..a9907c1661bd8 100644
--- a/app/code/Magento/Catalog/Model/Product.php
+++ b/app/code/Magento/Catalog/Model/Product.php
@@ -10,6 +10,7 @@
 use Magento\Catalog\Api\Data\ProductInterface;
 use Magento\Catalog\Api\ProductLinkRepositoryInterface;
 use Magento\Catalog\Model\Product\Attribute\Backend\Media\EntryConverterPool;
+use Magento\Catalog\Model\Product\Configuration\Item\Option\OptionInterface;
 use Magento\Catalog\Model\FilterProductCustomAttribute;
 use Magento\Framework\Api\AttributeValueFactory;
 use Magento\Framework\App\Filesystem\DirectoryList;
@@ -108,7 +109,7 @@ class Product extends \Magento\Catalog\Model\AbstractModel implements
     /**
      * Product object customization (not stored in DB)
      *
-     * @var array
+     * @var OptionInterface[]
      */
     protected $_customOptions = [];
 
@@ -2062,7 +2063,7 @@ public function addCustomOption($code, $value, $product = null)
     /**
      * Sets custom options for the product
      *
-     * @param array $options Array of options
+     * @param OptionInterface[] $options Array of options
      * @return void
      */
     public function setCustomOptions(array $options)
@@ -2073,7 +2074,7 @@ public function setCustomOptions(array $options)
     /**
      * Get all custom options of the product
      *
-     * @return array
+     * @return OptionInterface[]
      */
     public function getCustomOptions()
     {
@@ -2084,14 +2085,11 @@ public function getCustomOptions()
      * Get product custom option info
      *
      * @param   string $code
-     * @return  array
+     * @return  OptionInterface|null
      */
     public function getCustomOption($code)
     {
-        if (isset($this->_customOptions[$code])) {
-            return $this->_customOptions[$code];
-        }
-        return null;
+        return $this->_customOptions[$code] ?? null;
     }
 
     /**
@@ -2101,11 +2099,7 @@ public function getCustomOption($code)
      */
     public function hasCustomOptions()
     {
-        if (count($this->_customOptions)) {
-            return true;
-        } else {
-            return false;
-        }
+        return (bool)count($this->_customOptions);
     }
 
     /**
@@ -2405,16 +2399,14 @@ public function reloadPriceInfo()
         }
     }
 
-    // phpcs:disable PHPCompatibility.FunctionNameRestrictions.ReservedFunctionNames
     /**
      * Return Data Object data in array format.
      *
      * @return array
      * @todo refactor with converter for AbstractExtensibleModel
      */
-    public function __toArray()
+    public function __toArray() //phpcs:ignore PHPCompatibility.FunctionNameRestrictions.ReservedFunctionNames
     {
-        // phpcs:enable PHPCompatibility.FunctionNameRestrictions.ReservedFunctionNames
         $data = $this->_data;
         $hasToArray = function ($model) {
             return is_object($model) && method_exists($model, '__toArray') && is_callable([$model, '__toArray']);