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Unused method argument - `card`. If it's necessary, use `_` or `_card` as an argument name to indicate that it won't be used. You can also write as `card_previewed(*)` if you want the method to accept any arguments but don't care about them.<br>Unused method argument - `preview_url`. If it's necessary, use `_` or `_preview_url` as an argument name to indicate that it won't be used. You can also write as `card_previewed(*)` if you want the method to accept any arguments but don't care about them.