MAGETWO-33658: Refactor Catalog module to use mutable data object interfaces

    - Remove copy and paste code

Author: Yu Tang

app/code/Magento/Eav/Api/Data/AttributeFrontendLabelInterface.php

@@ -6,35 +6,6 @@
  */
 namespace Magento\Eav\Api\Data;
 
-interface AttributeFrontendLabelInterface
+interface AttributeFrontendLabelInterface extends AttributeOptionLabelInterface
 {
-    /**
-     * Return store id
-     *
-     * @return int|null
-     */
-    public function getStoreId();
-
-    /**
-     * Set store id
-     *
-     * @param int $storeId
-     * @return $this
-     */
-    public function setStoreId($storeId);
-
-    /**
-     * Return label
-     *
-     * @return string|null
-     */
-    public function getLabel();
-
-    /**
-     * Set label
-     *
-     * @param string $label
-     * @return $this
-     */
-    public function setLabel($label);
 }

app/code/Magento/Eav/Model/Entity/Attribute/FrontendLabel.php

@@ -9,51 +9,7 @@
 /**
  * @codeCoverageIgnore
  */
-class FrontendLabel extends \Magento\Framework\Model\AbstractExtensibleModel implements
+class FrontendLabel extends OptionLabel implements
     \Magento\Eav\Api\Data\AttributeFrontendLabelInterface
 {
-    /**#@+
-     * Constants
-     */
-    const KEY_STORE_ID = 'store_id';
-    const KEY_LABEL = 'label';
-    /**#@-*/
-
-    /**
-     * {@inheritdoc}
-     */
-    public function getStoreId()
-    {
-        return $this->getData(self::KEY_STORE_ID);
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function getLabel()
-    {
-        return $this->getData(self::KEY_LABEL);
-    }
-
-    /**
-     * Set store id
-     *
-     * @param int $storeId
-     * @return $this
-     */
-    public function setStoreId($storeId)
-    {
-        return $this->setData(self::KEY_STORE_ID, $storeId);
-    }
-
-    /**
-     * Set label
-     *
-     * @param string $label
-     * @return $this
-     */
-    public function setLabel($label)
-    {
-        return $this->setData(self::KEY_LABEL, $label);
-    }
 }