Subtasks by Custom Field in Parent Issue
Returns subtasks of parent issues that have cf-name = cf-value equality
jep.subTasksByCustomFieldInMainTask
 returns subtasks of parent issues which have cf-name = cf-value equalityÂ
 Only text, select and multi-select custom fields can be searched!Â
Some samples:
Â
issue in jep.subTasksByCustomFieldInMainTask("Department", "Software")