搜索结果使用Lucene.net进行突出显示

I'm working on an asp.net application which uses Lucene.net I need to highlight the search results returned from Lucene. I believe there is a Highlighter class which serves this purpose.I am using Lucene.Net version 2.0.0.4 but am not able to find any Highlighter class in it. Kindly help.I'm working on an asp.net application which use