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12 lines
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property HasNext
prefix "Iterator"
prefix "List"
prefix "Scanner"
start -> start: *
start -> invalid: I = iterator(*)
start -> invalid: Scanner(I, *) // For constructors, biabduction has "this" as first argument
invalid -> valid: B = hasNext(i) if B != 0 // in SIL, "true" is encoded as "not 0"
valid -> invalid: next(i)
invalid -> error: next(i)