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PublishedAPI for packages intended to be used by Plugin and Contrib authors, or 
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See also 
Developing plugins, 
Developer's Bible, 
Technical Overview
Private subclass of 
Foswiki::Iterator that 
-  Is passed a array reference of a list of iterator arrays.
  -  Scans across the list of iterators using snoopNext to find the iterator with the lowest timestamp
  -  returns true to hasNext if any iterator has any records available.
  -  returns the record with the lowest timestamp to the next() request.
 
 
 ObjectMethod hasNext() → $boolean 
Scans all the iterators to determine if any of them have a record available.
 ObjectMethod next() → \$hash or @array 
Snoop all of the iterators to find the lowest timestamp record, and return the
field hash, or field array, depending up on the requested API version.