How to retrieve user's timezone in groovy

Summary:

adf.context.getSecurityContext()?.getUserProfile()?.getTimeZone() is returning null instead of user's timezone

Content (required):

We want to retrieve logged in user's preferred timezone which they have selected under Regional Preference.

We used standard inbuilt function to retrieve user's timezone, however, it is returning null.

def timeZone = adf.context.getSecurityContext()?.getUserProfile()?.getTimeZone();

Version (include the version you are using, if applicable):

23B (11.13.23.04.0)

Code Snippet (add any code snippets that support your topic, if applicable):

def timeZone = adf.context.getSecurityContext()?.getUserProfile()?.getTimeZone();

println(timeZone)

--Output--

null