I have downloaded all 4-grams and 5-grams data. I would like to generate Lucene index to be added to the Index available here http://languagetool.org/download/ngram-data/
Unfortunately, the following class is not available in the jar downloaded from https://mvnrepository.com/artifact/org.languagetool/languagetool-core
Please advise how to add 4 and 5 grams into existing Lucene index.
Thanks in advance.