This function returns a list of all sibling sub-tasks of the current issue.
In case the current issue is not a sub-task, an empty issue list will be returned.
siblingSubtasks() #Output: Issue list
Variant where you can specify an issue list to retrieve the sibling sub-tasks from.
siblingSubtasks(issueList) #Output: Issue list
Variant where you can specify a comma-separated list of issue keys to get the sibling sub-tasks from.
siblingSubtasks(issueKeys) #Output: Issue list