The fileSettings type exposes the following properties.
|acl||Gets or sets an Amazon S3 access control list. Options include
|contentType||Gets or sets content type of the uploading files.|
|key||Gets or sets an Amazon S3 file key.|
|meta||Gets or sets an array of metadata fields to be uploaded to Amazon S3 storage.|
|policy||Gets or sets a security policy describing what is permitted in the request. Requests without security policy are considered anonymous and only work on publicly writable buckets.|
|signature||Gets or sets a HMAC signature constructed using the secret key of the provided accessKeyId.|