This content is part of a third party extension that is not supported by the Cake project. For more information about this extension see Cake.AWS.S3.
Uploads the contents of the specified stream. For large uploads, the file will be divided and uploaded in parts using Amazon S3's multipart API. The parts will be reassembled as one object in Amazon S3.
public static Task S3Upload(this ICakeContext context, Stream stream, string key, UploadSettings settings)