Get the inventory item type restriction

Hey,
I couldn't find the info on the forum or online.

I am trying to find a way (non hardcoded) to find the inventory item / item type restriction of the block.

So I don't have to hard code all possible ammo of every possible turret in the game!

It would make life easier also for the refineries/arc furnace, O2H2 Gen etc....

Do you guys have any pointers?