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A set of transformations that can be applied to a blob to create a variant. This class is exposed via the ActiveStorage::Blob#variant method and should rarely be used directly.

In case you do need to use this directly, it's instantiated using a hash of transformations where the key is the command and the value is the arguments. Example:

ActiveStorage::Variation.new(resize: "100x100", monochrome: true, trim: true, rotate: "-90")

A list of all possible transformations is available at www.imagemagick.org/script/mogrify.php.