The function returns the list of sub-tasks of the current issue.
subtasks() #Output: Issue list
The function returns the list of sub-tasks of issues in argument issues. Duplicated issues in argument issues are discarded.
subtasks(issue list issues) #Output: Issue list
The function returns the list of sub-tasks of issues whose keys are in issue_keys. Argument issue_keys is a comma-separated list of issue keys.
Duplicated issue keys in argument issue_keys are discarded.
subtasks(text issue_keys) #Output: Issue list