A unique custom slug (short code) to be used instead of the generated short code
Will force existing matching URL to be returned if found, instead of creating a new one
Tells if the query params should be forwarded from the short URL to the long one
This will generate and return the shortcode.
The long URL this short URL will redirect to. This is the only REQUIRED parameter.
The date (in ISO-8601 format) until which this short code will be valid
Used to generate a short url. See [[B.Shlink]]