wp-includes/class-wp-block-supports.php:66Initializes the block supports. It registers the block supports block attributes.
public static function init() { $instance = self::get_instance(); $instance->register_attributes(); }Introduced in 5.6.0. One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
none to void.verified against sourcesrc/wp-includes/class-wp-block-supports.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.