Using "issuelink" to get linked issue keys

[ma1am]

Hello folks,

I have a use case to fetch an issue's linked issue (key).

To achieve that I have below code:

jira = JIRA(url, token_auth=auth_token)
issue = jira.issue(id="PRO-6174") 
issuelink_key = issue.fields.issue links
print(issuelink_key)

However, every time I run it, it goes through the __repr__ function and gives me the output below:

[<JIRA IssueLink: id='1001011'>]

So can someone let me know if there is any other method to achieve it? Or at least let me know why it always goes through the repr and not str function.