public override IEnumerable <IndexField> GetIndexFields(IIndexableField snField, out string textExtract)
{
var data = snField.GetData() as string ?? string.Empty;
var titles = data.Split(new[] { WikiTools.REFERENCEDTITLESFIELDSEPARATOR }, 100000, StringSplitOptions.RemoveEmptyEntries);
textExtract = string.Empty;
return(CreateField(snField.Name, titles));
}