public void TestUpdate()
{
_record1["Title"] = "Torta de Salsinha";
_index.Update(_record1);
_multipleFieldIndex.Update(_record1);
ISearchExpression expression = new FullTextSearchExpression("torta salsinha");
AssertSearchContains(_index.Search(expression), _record1, _record3);
AssertSearchContains(_multipleFieldIndex.Search(expression), _record1, _record3);
}