A set of transformations that can be applied to a blob to create a variant. This class is exposed via the ActiveStorage::Blob::Representable#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_to_fit: [100, 100], monochrome: true, trim: true, rotate: "-90")
The options map directly to ImageProcessing commands.