How to add a custom URL fragment to a flow

Hi there,
I鈥檇 like to modify, or create, a flow based on the Nextcloud Talk flow to write into a conversation: spreed/RegisterOperationsListener.php at master 路 nextcloud/spreed 路 GitHub

I鈥檇 like to adjust the URL created to include additional elements, for example, instead of cloud.domain.tld/s/3dhjfdkhhke it should be cloud.domain.tld/apps/memories/s/3dhjfdkhhke

Is this possible?