[BUG] Sporadically TurtleLoader.loadTurtle fails

[external-Bogdan-Toma]

Describe the bug
Using TurtleLoader.loadTurtle fails sometime in a multi threading setup due to registering TURTLE language and this is not a thread safe operation. This can occur not only when loading a custom ttl, but also when loading meta-model files (e.g calling SammAspectMetaModelResourceResolver.mergeMetaModelIntoRawModel)

RDFParserRegistry.registerLangTriples( Lang.TURTLE, ReaderRIOTTurtle.factory );

java.lang.IllegalStateException: Expect to find '[text/turtle]'. The full stacktrace is attached at end.

Where
esmf-aspect-meta-model-resolver:2.3.1

Additional context

• The test proves the problem (maybe there is a need to change number of threads)
  org.example.turtleloader.zip
• Stacktrace:
  java.lang.IllegalStateException: Expect to find '[text/turtle]'
  at org.apache.jena.riot.RDFLanguages.register(RDFLanguages.java:280)
  at org.apache.jena.riot.RDFParserRegistry.registerLang(RDFParserRegistry.java:130)
  at org.apache.jena.riot.RDFParserRegistry.registerLangTriples(RDFParserRegistry.java:140)
  at org.eclipse.esmf.aspectmodel.resolver.services.TurtleLoader.loadTurtle(TurtleLoader.java:65)
  at example.TurtleLoaderTest.lambda$turtleLoaderTest$0(TurtleLoaderTest.java:23)
  at java.base/java.lang.Thread.run(Thread.java:833)
• Idea: implement maybe something similar to org.eclipse.esmf.aspectmodel.resolver.services.DataType.setupTypeMapping

[soriniov]

@chris-volk , @atextor, is there any update regarding this issue?

[github-actions]

Release v2.4.0 addresses this.