https://docs.atlassian.com/software/jira/docs/api/7.13.1/com/atlassian/jira/issue/security/IssueSecurityLevelServiceImpl.html
IssueSecurityLevelServiceImpl (Atlassian JIRA - Server 7.13.1 API)
atlassian jiraserverapi
https://docs.atlassian.com/software/jira/docs/api/7.3.4/com/atlassian/jira/issue/security/IssueSecurityLevelServiceImpl.html
IssueSecurityLevelServiceImpl (Atlassian JIRA 7.3.4 API)
atlassian jiraapi