Document text extraction

For example, the text being indexed may be an XML or HTML document and you may only want to index the text content of the elements:

var index = new FullTextIndexBuilder<int>()
    .WithTextExtraction<XmlTextExtractor>()
    .Build();

Text extraction is only applied when indexing text, i.e. calls to the IFullTextIndex.AddAsync overloads. When searching, text extraction is never applied to any query text.