https://opennlp.apache.org/docs/2.5.4/apidocs/opennlp-tools/opennlp/tools/util/ext/ExtensionNotLoadedException.html
ExtensionNotLoadedException (Apache OpenNLP Tools 2.5.4 API)
declaration: package: opennlp.tools.util.ext, class: ExtensionNotLoadedException
apache opennlptoolsapi