wp-includes/block-supports/block-style-variations.php:251Enqueues styles for block style variations.
function wp_enqueue_block_style_variation_styles() { wp_enqueue_style( 'block-style-variation-styles' );}Introduced in 6.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/block-supports/block-style-variations.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.