How do I clone a tilemap?

I have created a tilemap whcih is seamless but I want this to repeat when the players nears the edge.

How can I clone the existing tilemap with all the same tiles etc for this purpose?

Obviously I can create a new instance of the tilemap, but this new instance will not have the tile data.

I can see that its probably possibly using TilesJSON but Im not sure how Im supposed to store the Tilemap JSON data exactly.

Thanks

You can save Tilemap.TileJSON in a text variable. Then create a new tilemap instance and load tile data from that variable. Use Tilemap Load action.