Analysing conveyer system for hydrogen/oxygen

Hi,

I need help finding the right way to analyse the conveyer system of a grid with a script.
For the most block types this is not problem. You can select the inventory of the block an check with "IsConnectedTo" or "CanTransferItemTo" if the block has a conveyer connection to another on.

But how to check if a hydrogen tank has a connection to a hydrogen engine or a thruster for example?
Those blocks can't store any items, so "CanTransferItemTo" doesn't work. All blocks implement the...

Analysing conveyer system for hydrogen/oxygen