The methods \Magento\Framework\App\Config\ValueInterface::getFieldsetDataValue() and \Magento\Framework\App\Config\Value::getFieldsetDataValue() are declared but never used

[dmitry_fedyuk (Dmitrii Fediuk)]

magento/magento2/blob/d50ee54/lib/internal/Magento/Framework/App/Config/ValueInterface.php#L31-L37

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magento/magento2/blob/d50ee54/lib/internal/Magento/Framework/App/Config/Value.php#L97-L107

[dmitry_fedyuk (Dmitrii Fediuk)]

See also:

• The method \Magento\Framework\App\Config\ValueInterface::isValueChanged() should be removed from the interface because it is used only internally by a particular interface implementation: \Magento\Framework\App\Config\Value
• The method \Magento\Framework\App\Config\ValueInterface::getOldValue() should be removed from the interface because it is used only internally by a particular interface implementation: \Magento\Framework\App\Config\Value
• A backend model should always be a \Magento\Framework\Model\AbstractModel