Open port vs HydraulicPort

[roman-timo]

Hi guys,

I’m adding some docstrings for hydraulic components, especially for those freshly exported - Open, FlowDivider, etc.
Can you please explain the concept of Open port? Why would someone use an Open port if you have HydraulicPort?
src/Hydraulic/IsothermalCompressible/components.jl

Thx