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Model

Reader

Magento\Catalog\Model\Attribute\Config\Reader

What it does

This class reads and merges catalog attribute configuration from multiple catalog_attributes.xml files across Magento 2 modules.

Developers use this when they need to define custom attribute groups or configure how catalog attributes behave in different contexts by adding catalog_attributes.xml files to their modules.

The class automatically handles merging configurations based on group and attribute names.