Unsupported
GET /repos/{owner}/{repo}/assigneesUAT IAT - List assigneesGET /repos/{owner}/{repo}/assignees/{assignee}UAT IAT - Check if a user can be assignedPOST /repos/{owner}/{repo}/issues/{issue_number}/assigneesUAT IAT - Add assignees to an issueDELETE /repos/{owner}/{repo}/issues/{issue_number}/assigneesUAT IAT - Remove assignees from an issueGET /repos/{owner}/{repo}/issues/{issue_number}/assignees/{assignee}UAT IAT - Check if a user can be assigned to a issue