What does the “Opening store for Action {00..NN}” mean?

When looking at the the inventoryagent.log on my clients, I would see the line:
Inventory: Opening store for action {00000000-0000-0000-0000-000000000001} ...
I could see that 1 was the hardware inventory because of all the WMI references, but what were the others? After some research I have found out!
{00000000-0000-0000-0000-000000000001} – Hardware Inventory
{00000000-0000-0000-0000-000000000002} – Software Inventory
{00000000-0000-0000-0000-000000000003} – Discovery
{00000000-0000-0000-0000-000000000010} – File Collection
{00000000-0000-0000-0000-000000000011} – IDMIF collection

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