'How to get storage information of the EFI partition?

How can I get the size and current usage of the EFI partition on a disk?

I see that I can use the following command to at least the size of the partition, but I haven't found anything about how to get the current utilization:

get-partition |Where-Object{ $_.GptType -eq "{c12a7328-f81f-11d2-ba4b-00a0c93ec93b}"} |Select Size



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