The key to an extra Android.Runtime.JavaList of Java.Lang.Strings that contains the base url to assume when interpreting html provided in RecognizerResultsIntent.ExtraVoiceSearchResultHtml. A list of size 1 may be provided to apply the same base url to all html results. A list of the same size as RecognizerResultsIntent.ExtraVoiceSearchResultStrings may be provided to apply different base urls to each different html result in the RecognizerResultsIntent.ExtraVoiceSearchResultHtml list.