If you want more Jinja2 filters available in a Jinja2 template (filters like to_yaml and to_json are provided by default), they can be extended by writing a filter plugin. Most of the time, when someone comes up with an idea for a new filter they would like to make available in a playbook, we'll just include them in 'core.py' instead.
Jump into `lib/ansible/runner/filter_plugins/ <https://github.com/ansible/ansible/tree/devel/lib/ansible/runner/filter_plugins>`_ for details.
Jump into `lib/ansible/runner/filter_plugins/ <https://github.com/ansible/ansible/tree/devel/lib/ansible/plugins/filter>`_ for details.
