public List<HString> collectHString(@NonNull HString hString) {
      return streamHString(hString).collect(Collectors.toList());
   }
public List < HString > collectHString ( @ NonNull HString hString ) { return streamHString ( hString ) . collect ( Collectors . toList ( ) ) ; }
Collect h string list.

@param hString the h string
@return the list