If you write a comment describing your sins, that makes the sins okay.

api/src/opentrons/protocol_engine/actions/actions.py

@@ -174,6 +174,10 @@ class FailCommandAction:
     type: ErrorRecoveryType
     """How this error should be handled in the context of the overall run."""
 
+    # This is a quick hack so FailCommandAction handlers can get the params of the
+    # command that failed. We probably want this to be a new "failure details"
+    # object instead, similar to how succeeded commands can send a "private result"
+    # to Protocol Engine internals.
     running_command: Command
     """The command to fail, in its prior `running` state."""