Although PHP standards may dictate certain class methods to be private, Magento's Interceptor implementation requires methods to be public for things like Plugins to work correctly. Example being previously made Plugin on \Dotdigitalgroup\Email\Model\Connector\Order::_getOrderItemOptions.
Although PHP standards may dictate certain class methods to be private, Magento's Interceptor implementation requires methods to be public for things like Plugins to work correctly. Example being previously made Plugin on
\Dotdigitalgroup\Email\Model\Connector\Order::_getOrderItemOptions
.