It is trellised just like the 'old' folks do it here in Europe.
I have one rope per plant hanging down from a horizontal bar (only 2 meters high because I am in a cold climate and tomatoes hanging higher then 2m usually don't ripen). When I plant I make a knot around the base. Rather large knot/loop since the stem will grow bigger. The rope is taut. I twist the plant around the rope. Every time I remove the suckers I twist the plant around it. All suckers are removed. When a truss is blushing all leaves under that truss are removed. The plant gets 'naked' at the lower half when it's picking season. It seems maybe fragile, but this thin piece of rope supports heavy plants.
It is the traditional way here because we have often a lot of rain and phytophthora is a mayor disease here. It thrives in warm (not hot) and humid weather. When the leaves stay wet for a couple of hours it can attack the plant. Thus we try to have as little as possible leaves and as much as possible airflow.
A pic I found on the web;
https://i.pinimg.com/236x/49/81/fb/4...reen-earth.jpg