Fetch all user picker fields from an issue

Question

Is there a way to fetch all user picker fields from an issue?

For example, I know how to fetch all custom fields and regular fields from an issue using the FieldManager component. How do I then filter these fields based on if they are user pickers or not?

Jobin Kuruvilla [Adaptavist] · Accepted Answer

JIRA finds all user picker fields by checking if a custom field implements UserField interface all not! If it does, then the field will appear under user fields in View Issue page. Might work for you too.