mentException( self::class_name_without_namespace( __CLASS__ ) . '::' . __FUNCTION__ . ': the values array is empty' );
		}

		return '(' . implode( ',', $values ) . ')';
	}

	/**
	 * Get the name of a class without the namespace.
	 *
	 * @param string $class_name The full class name.
	 * @return string The class name without the namespace.
	 */
	public static function class_name_without_namespace( string $class_name ) {
		// A '?:' would convert this to a one-liner, but WP coding standards disallow these :shrug:.
		$result = substr( strrchr( $class_name, '\\' ), 1 );
		return $result ? $result : $class_name;
	}
}