XF 1.5 How to add anchor/hash in a xen:link syntax

[abdfahim]

I want to link to https://www.example.com/account/contact-details#checkpoint

I tried:

<a href="{xen:link account/contact-details#checkpoint}">

or

<a href="{xen:link account/contact-details, '#checkpoint'}">

The first one gives template error, and the second one ignores the hash part.