If I have only 1 inventory, should I use Inventory Handler?

[TheYellowArchitect]

I ask this because the demo has equipment_inventory and main_inventory, and uses InventoryHandler as its parent.
If I have only 1 inventory, do I really need InventoryHandler? Or do I need InventoryHandler even with 1 inventory, in order to move items, from my main inventory, to some other inventory (e.g. craft station)

I ask because the docs don't cover this, and the remote scene in Godot doesn't make it obvious either

[scriptsengineer]

InventoryHandler is obsolete in 2.0.0