CssParser.Cache.save

You're seeing just the function save, go back to CssParser.Cache module for more information.
Link to this function

save(parsed_data, key, list)

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Specs

save([map()], binary(), [{:returning, true | false}]) :: boolean() | [map()]

Insert the parsed css into ets cache using hash key of the css string

Options

returning - when set to true it returns the inserted data, otherwise returns true