Why is there no \setminus in the font?

[TheTeXnician]

When I compile the following example:

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{Garamond-Math.otf}[Path=./]

\begin{document}
$A\setminus B$
\end{document} 

I get no output between A and B (with LuaLaTeX, a questionmark box with XeLaTeX). As Garamond-Math does have a \backslash I wonder why there is no \setminus (⧵ (U+29F5)).

[YuanshengZhao]

I have copied the \backslash to \setminus. Please note that there is also \smallsetminus, which is already available. If you want to use the font right now, please use this build:
Garamond-Math.zip