Option (* = required)  Description
---------------------  -----------
--append-stdio         Flag to append stdin and stdout as
                         outputs instead of the default ES
                         output.
* --input <URI>        Input JSON file location URI. Only
                         supports 'file://' as URI schema.
* --output <URI>       Output Logstash DSL file location URI.
                         Only supports 'file://' as URI
                         schema.
Exception in thread "main" joptsimple.UnrecognizedOptionException: 'help' is not a recognized option
	at joptsimple.OptionException.unrecognizedOption(OptionException.java:89)
	at joptsimple.OptionParser.handleLongOptionToken(OptionParser.java:429)
	at joptsimple.OptionParserState$2.handleArgument(OptionParserState.java:56)
	at joptsimple.OptionParser.parse(OptionParser.java:361)
	at org.logstash.ingest.JsUtil.convert(JsUtil.java:96)
	at org.logstash.ingest.Pipeline.main(Pipeline.java:35)