Limit POST in htaccess

In Apache, I use the following htaccess file to require basic authentication on POST requests only. On litespeed, this same block requires basic auth for all requests, including GET which I want to make openly available.

<Limit POST>
AuthType Basic
AuthName "Restricted Content"
AuthUserFile /etc/htpasswd
Require valid-user

Is there a way to get this same behavior on litespeed? I want to require a password for all POST requests, but leave GET requests open to all.