fix the isset code style

Author: GraysonAstral

app/code/Magento/Bundle/Helper/Data.php

@@ -38,6 +38,6 @@ public function getAllowedSelectionTypes()
     {
         $configData = $this->config->getType(\Magento\Catalog\Model\Product\Type::TYPE_BUNDLE);
 
-        return isset($configData['allowed_selection_types']) ? $configData['allowed_selection_types'] : [];
+        return $configData['allowed_selection_types'] ?? : [];
     }
 }

app/code/Magento/Catalog/Block/Adminhtml/Product/Edit/Tab/Price/Group/AbstractGroup.php

@@ -212,7 +212,7 @@ public function getCustomerGroups($groupId = null)
         }
 
         if ($groupId !== null) {
-            return isset($this->_customerGroups[$groupId]) ? $this->_customerGroups[$groupId] : [];
+            return $this->_customerGroups[$groupId] ?? [];
         }
 
         return $this->_customerGroups;

app/code/Magento/Catalog/Model/Product/Attribute/Source/Status.php

@@ -83,7 +83,7 @@ public function getOptionText($optionId)
     {
         $options = self::getOptionArray();
 
-        return isset($options[$optionId]) ? $options[$optionId] : null;
+        return $options[$optionId] ?? null;
     }
 
     /**

app/code/Magento/Catalog/Model/Product/Gallery/EntryResolver.php

@@ -27,7 +27,7 @@ public function getEntryFilePathById(Product $product, $entryId)
 
         foreach ($mediaGalleryData['images'] as $image) {
             if (isset($image['value_id']) && $image['value_id'] == $entryId) {
-                return isset($image['file']) ? $image['file'] : null;
+                return $image['file'] ?? null;
             }
         }
         return null;
@@ -49,7 +49,7 @@ public function getEntryIdByFilePath(Product $product, $filePath)
 
         foreach ($mediaGalleryData['images'] as $image) {
             if (isset($image['file']) && $image['file'] == $filePath) {
-                return isset($image['value_id']) ? $image['value_id'] : null;
+                return $image['value_id'] ?? null;
             }
         }
         return null;

app/code/Magento/Catalog/Model/Product/Visibility.php

@@ -133,7 +133,7 @@ public static function getAllOptions()
     public static function getOptionText($optionId)
     {
         $options = self::getOptionArray();
-        return isset($options[$optionId]) ? $options[$optionId] : null;
+        return $options[$optionId] ?? null;
     }
     //phpcs:enable Magento2.Functions.StaticFunction
 

app/code/Magento/Catalog/Model/ProductLink/Converter/ConverterPool.php

@@ -34,8 +34,6 @@ public function __construct(array $converters)
      */
     public function getConverter($linkType)
     {
-        return isset($this->converters[$linkType])
-            ? $this->converters[$linkType]
-            : $this->converters[$this->defaultConverterCode];
+        return $this->converters[$linkType] ?? $this->converters[$this->defaultConverterCode];
     }
 }

app/code/Magento/Catalog/Model/ProductLink/Link.php

@@ -30,7 +30,7 @@ class Link extends \Magento\Framework\Model\AbstractExtensibleModel implements
      */
     protected function _get($key)
     {
-        return isset($this->_data[$key]) ? $this->_data[$key] : null;
+        return $this->_data[$key] ?? null;
     }
 
     /**

app/code/Magento/Checkout/Block/Checkout/AttributeMerger.php

@@ -197,7 +197,7 @@ protected function getFieldConfig(
                 ? $additionalConfig['sortOrder']
                 : $attributeConfig['sortOrder'],
             'validation' => $this->mergeConfigurationNode('validation', $additionalConfig, $attributeConfig),
-            'options' => $this->getFieldOptions($attributeCode, $attributeConfig),
+            'options' => $this->getFieldOptions($attributeConfig),
             'filterBy' => isset($additionalConfig['filterBy']) ? $additionalConfig['filterBy'] : null,
             'customEntry' => isset($additionalConfig['customEntry']) ? $additionalConfig['customEntry'] : null,
             'visible' => isset($additionalConfig['visible']) ? $additionalConfig['visible'] : true,
@@ -381,14 +381,13 @@ protected function getCustomer(): ?CustomerInterface
     /**
      * Retrieve field options from attribute configuration
      *
-     * @param string $attributeCode
      * @param array $attributeConfig
      * @return array
      * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
-    protected function getFieldOptions($attributeCode, array $attributeConfig)
+    protected function getFieldOptions(array $attributeConfig)
     {
-        return isset($attributeConfig['options']) ? $attributeConfig['options'] : [];
+        return $attributeConfig['options'] ?? [];
     }
 
     /**

app/code/Magento/Config/Model/Config/Structure/AbstractElement.php

@@ -103,7 +103,7 @@ public function getData()
      */
     public function getId()
     {
-        return isset($this->_data['id']) ? $this->_data['id'] : '';
+        return $this->_data['id'] ?? '';
     }
 
     /**
@@ -133,7 +133,7 @@ public function getComment()
      */
     public function getFrontendModel()
     {
-        return isset($this->_data['frontend_model']) ? $this->_data['frontend_model'] : '';
+        return $this->_data['frontend_model'] ?? '';
     }
 
     /**
@@ -194,7 +194,7 @@ protected function _hasVisibilityValue($key)
      */
     public function getClass()
     {
-        return isset($this->_data['class']) ? $this->_data['class'] : '';
+        return $this->_data['class'] ?? '';
     }
 
     /**

app/code/Magento/Config/Model/Config/Structure/Element/Field.php

@@ -150,7 +150,7 @@ public function getTooltip()
      */
     public function getType()
     {
-        return isset($this->_data['type']) ? $this->_data['type'] : 'text';
+        return $this->_data['type'] ?? 'text';
     }
 
     /**
@@ -204,7 +204,7 @@ public function getRequiredFields($fieldPrefix = '')
      */
     public function getFrontendClass()
     {
-        return isset($this->_data['frontend_class']) ? $this->_data['frontend_class'] : '';
+        return $this->_data['frontend_class'] ?? '';
     }
 
     /**
@@ -256,7 +256,7 @@ public function getGroupPath()
      */
     public function getConfigPath()
     {
-        return isset($this->_data['config_path']) ? $this->_data['config_path'] : null;
+        return $this->_data['config_path'] ?? null;
     }
 
     /**
@@ -334,7 +334,7 @@ public function hasValidation()
      */
     public function getValidation()
     {
-        return isset($this->_data['validate']) ? $this->_data['validate'] : null;
+        return $this->_data['validate'] ?? null;
     }
 
     /**