RemindMe engine for Home Assistant - intent script

configuration.yaml

intent_script:
  RemindMe:
    action:
      service: script.remindme_processor
      data:
        reminder: "{{ reminder }}"
        on_day: "{{ on_day }}"
        duration: "{{ duration }}"
        units: "{{ units }}"
        partofday: "{{ partofday }}"
    speech:
      text: "Creating reminder {{ reminder }}"

where is script.remindme_processor code?