wp_render_widget_control( string $id ): string|null

2073function wp_render_widget_control( $id ) {2074	global $wp_registered_widget_controls;2075 2076	if ( ! isset( $wp_registered_widget_controls[ $id ]['callback'] ) ) {2077		return null;2078	}2079 2080	$callback = $wp_registered_widget_controls[ $id ]['callback'];2081	$params   = $wp_registered_widget_controls[ $id ]['params'];2082 2083	ob_start();2084 2085	if ( is_callable( $callback ) ) {2086		call_user_func_array( $callback, $params );2087	}2088 2089	return ob_get_clean();2090}