WP_Theme_JSON::get_custom_css(): string

Source

 * New block styles may have been registered within WP_Block_Styles_Registry.
 * Update block metadata for any new block style variations.
 */
$registered_styles = $style_registry->get_all_registered();
foreach ( static::$blocks_metadata as $block_name => $block_metadata ) {
	if ( ! empty( $registered_styles[ $block_name ] ) ) {
		$style_selectors = $block_metadata['styleVariations'] ?? array();

		foreach ( $registered_styles[ $block_name ] as $block_style ) {
			if ( ! isset( $style_selectors[ $block_style['name'] ] ) ) {
				$style_selectors[ $block_style['name'] ] = static::get_block_style_variation_selector( $block_style['name'], $block_metadata['selector'] );
			}
		}

		static::$blocks_metadata[ $block_name ]['styleVariations'] = $style_selectors;
	}
}

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