Creates a link that provides access to an object for a specified amount of time.
This method creates and returns a pre-authenticated link that provides access to the object specified by ObjectName in the bucket currently selected by Bucket. If the VersionId property is non-empty, a link is created for the specified version of the object.
The Expires parameter specifies how many seconds the link should be valid for. The maximum validity period is seven days.
Note that this method is an offline method that simply generates a pre-signed URL; no communication with the server takes place.