The date and time to be used as signature metadata. This value should be
a Date object, a unix (epoch) timestamp, or a string that can be
understood by the JavaScript Date constructor.If not supplied, the
value returned by new Date() will be used.
Optional signingRegion
signingRegion:undefined | string
The region name to sign the request. It will override the signing region of the
signer in current invocation
Optional signingService
signingService:undefined | string
The service signing name. It will override the service name of the signer
in current invocation
The date and time to be used as signature metadata. This value should be a Date object, a unix (epoch) timestamp, or a string that can be understood by the JavaScript
Dateconstructor.If not supplied, the value returned bynew Date()will be used.