Reader
Magento\PageBuilder\Model\Config\MenuSection\Reader
What it does
This class reads and processes menu_section.xml configuration files for PageBuilder's menu sections.
It parses XML configuration files that define custom menu sections in the PageBuilder interface, merging configurations from different modules based on the 'name' attribute.
Developers would use this when they need to add or customize menu sections in PageBuilder's drag-and-drop interface.