description

# update abstract method

Future<Link> update(

1. String target

)

Updates an existing link.

Deletes the existing link at path and creates a new link to `target`, using create.

Returns a future which completes with this `Link` if successful, and with a PathNotFoundException if there is no existing link at path, or with any FileSystemException that delete or create can throw.

## Implementation

    Future<Link> update(String target);