WP_REST_Global_Styles_Revisions_Controller::get_revision( int $id ): WP_Post|WP_Error

Source

$parent               = $this->get_parent( $request['parent'] );
$global_styles_config = $this->get_decoded_global_styles_json( $post->post_content );

if ( is_wp_error( $global_styles_config ) ) {
	return $global_styles_config;
}

$fields     = $this->get_fields_for_response( $request );
$data       = array();
$theme_json = null;

if ( ! empty( $global_styles_config['styles'] ) || ! empty( $global_styles_config['settings'] ) ) {
	/*
	 * Register block style variations from the theme data.
	 * This is required so the variations pass sanitization of theme.json data.
	 */
	if ( ! empty( $global_styles_config['styles']['blocks'] ) ) {

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