<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/ObjectManager/etc/config.xsd">
    <preference for="Magento\Catalog\Block\Adminhtml\Product" type="Custom\Itinerary\Block\Adminhtml\ProductTypes" />
    <preference for="Magento\Backend\Block\Widget\Button\SplitButton" type="Custom\Itinerary\Block\Adminhtml\SplitButton" />
</config>