$Enum
->Next([count
])
Returns the next item in the collection. You can optionally provide
Next
with a count (which must be greater than zero), in which case it
returns a list of the next count items. Note that if you provide a scalar
context in conjunction with a count, you'll only get the last item in the
list of returned items. Next
returns undef
if it is currently on the last
item in the collection.