WordPress Version: 6.4
/**
* Returns the metadata for the custom templates defined by the theme via theme.json.
*
* @since 6.4.0
*
* @return array Associative array of `$template_name => $template_data` pairs,
* with `$template_data` having "title" and "postTypes" fields.
*/
function wp_get_theme_data_custom_templates()
{
return WP_Theme_JSON_Resolver::get_theme_data(array(), array('with_supports' => false))->get_custom_templates();
}