Narrow access-pass representation embedded in AccessGrid.LedgerItem. Returned
with just enough fields to identify the pass behind a ledger line; for the full
access-pass shape, use AccessGrid.AccessPasses.get/2.
The field is named pass_template here (matching the wire key Rails returns)
but its value is a %AccessGrid.LedgerItem.CardTemplate{}.
Summary
Functions
Creates a LedgerItem.AccessPass struct from an API response map.