Are there any complete examples of using 'change_logsource' in a pipeline rule?

[BCall-BT]

I'm trying to use pipelines with sigma-cli or https://sigconverter.io/ to replace the default index patterns used when converting to an elastic siem rule. Any attempt I make either errors out or does nothing. Below is the only reference I can find, but it does not work
name: transformation_demo priority: 100 transformations: - id: prefix_source_and_index_for_puppy_logs type: change_logsource mapping:

[joshnck]

transformations:
- id: change_logsource
  type: change_logsource
  category: security
  rule_conditions:
  - type: logsource
    category: process_creation

That should do it for you!