AssetType 
    class AssetType
An image file from a managed login branding style in a user pool.
Types
Properties
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                  The category that the image corresponds to in your managed login configuration. Managed login has asset categories for different types of logos, backgrounds, and icons.
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                  The display-mode target of the asset: light, dark, or browser-adaptive. For example, Amazon Cognito displays a dark-mode image only when the browser or application is in dark mode, but displays a browser-adaptive file in all contexts.
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                  The file type of the image file.
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                  The ID of the asset.