static Map<S, Long> listZipAsNameToSizeMap(File inZip) ctex {
  if (inZip == null) null;
  temp ZipFile zipFile = new ZipFile(inZip);
  ret listZipAsNameToSizeMap(zipFile);
}
    
static Map<S, Long> listZipAsNameToSizeMap(ZipFile zipFile) {
  ret mapToMap(listZipEntries(zipFile), e -> pair(e.getName(), e.getSize()));
}

Began life as a copy of #1022702