catalog.yaml

catalog:
  <AboutCard>:
    $import:
      - names: [<AboutCard>]
        from: ./catalog.yaml
      - names: [<Alarm>]
        from: ./icons.yaml
    $do:
      $<AboutCard>:
        secondaryButtons(_):
          - $_.<EntityRefreshButton>
          - $_.<EntityEditMetadataButton>
          - $_.<Link>:
              label: Alarm
              disabled: false
              title: Set Alarm
              to: http://set-alarm.com
              <>:
                - $<Alarm>: true