Coolant Hose GTA

[GTA741]

Hey peeps!

So I have a 147 gta.

Now I was inspecting the coolant hoses. This one is towards the right of the engine bay and I'm sure it's connected to the heater core (could be wrong) so there's a tiny leak, no biggie but I'm worried if that bulge is a sign of the hose about to burst or it's just how it's designed.

Attached is the pic:
https://imgur.com/a/hxBysjR

Thanks!