Model
DesignTheme
Magento\Theme\Model\Config\Processor\DesignTheme
What it does
This class is a configuration preprocessor that converts theme identifiers from their full path format (e.g., 'frontend/Magento/blank') to numeric theme IDs in system configuration.
Magento uses this during config initialization to ensure theme references are stored consistently as IDs rather than paths, making theme lookups more efficient across different configuration scopes (default, website, store).
Public Methods
- process()