IndexerHandler
Magento\Theme\Model\Indexer\Design\IndexerHandler
What it does
This class handles the indexing operations for the design configuration grid in Magento 2's Theme module.
Developers would use this when managing theme configuration data that needs to be indexed for performance, particularly when clearing or recreating the design_config_grid_flat index table.
It extends the Grid save handler and includes special logic to handle character set migrations from older UTF-8 collations to utf8mb4.
Public Methods
- cleanIndex()