IsrTask is a command-line task, but its run method does not take a dataRef (it instead has a runDataRef method. This is inconsistent with other CmdLineTasks and more importantly breaks parseAndRun.
I'm committing a small workaround on
DM-6631 to get parseAndRun working, but the ultimately method names should be made consistent across CmdLineTasks. That will require an API change and hence an RFC.