bound must be positive exception in random generator

[pshirshov]

Exception in thread "main" java.lang.IllegalArgumentException: bound must be positive
	at java.base/java.util.Random.nextInt(Random.java:388)
	at scala.util.Random.nextInt(Random.scala:70)
	at izumi.idealingua.translator.tocsharp.types.CSharpType.getRandomValue(CSharpType.scala:206)
	at izumi.idealingua.translator.tocsharp.types.CSharpType.getRandomValue(CSharpType.scala:19)
	at izumi.idealingua.translator.tocsharp.types.CSharpType.$anonfun$randomDto$4(CSharpType.scala:250)
	at scala.collection.immutable.List.map(List.scala:297)
	at izumi.idealingua.translator.tocsharp.types.CSharpType.randomDto(CSharpType.scala:250)
	at izumi.idealingua.translator.tocsharp.types.CSharpType.getRandomValue(CSharpType.scala:211)
	at izumi.idealingua.translator.tocsharp.types.CSharpType.getRandomValue(CSharpType.scala:19)
	at izumi.idealingua.translator.tocsharp.extensions.NUnitExtension$.$anonfun$postEmitModules$3(NUnitExtension.scala:160)
	at scala.collection.immutable.List.map(List.scala:297)
	at izumi.idealingua.translator.tocsharp.extensions.NUnitExtension$.postEmitModules(NUnitExtension.scala:160)
	at izumi.idealingua.translator.tocsharp.extensions.CSharpTranslatorExtensions.$anonfun$postEmitModules$3(CSharpTranslatorExtensions.scala:72)
	at scala.collection.immutable.List.flatMap(List.scala:366)
	at izumi.idealingua.translator.tocsharp.extensions.CSharpTranslatorExtensions.postEmitModules(CSharpTranslatorExtensions.scala:72)
	at izumi.idealingua.translator.tocsharp.CSharpTranslator.translateDef(CSharpTranslator.scala:75)
	at izumi.idealingua.translator.tocsharp.CSharpTranslator.$anonfun$translate$1(CSharpTranslator.scala:33)
	at scala.collection.immutable.List.flatMap(List.scala:366)
	at izumi.idealingua.translator.tocsharp.CSharpTranslator.translate(CSharpTranslator.scala:33)
	at izumi.idealingua.translator.TypespaceCompilerBaseFacade.$anonfun$compile$1(TypespaceCompilerBaseFacade.scala:15)
	at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:286)
	at scala.collection.Iterator.foreach(Iterator.scala:943)
	at scala.collection.Iterator.foreach$(Iterator.scala:943)
	at scala.collection.AbstractIterator.foreach(Iterator.scala:1431)
	at scala.collection.IterableLike.foreach(IterableLike.scala:74)
	at scala.collection.IterableLike.foreach$(IterableLike.scala:73)
	at scala.collection.AbstractIterable.foreach(Iterable.scala:56)
	at scala.collection.TraversableLike.map(TraversableLike.scala:286)
	at scala.collection.TraversableLike.map$(TraversableLike.scala:279)
	at scala.collection.AbstractTraversable.map(Traversable.scala:108)
	at izumi.idealingua.translator.TypespaceCompilerBaseFacade.compile(TypespaceCompilerBaseFacade.scala:13)
	at izumi.idealingua.translator.TypespaceCompilerFSFacade.compile(TypespaceCompilerFSFacade.scala:29)
	at izumi.idealingua.compiler.CommandlineIDLCompiler$.$anonfun$runCompiler$4(CommandlineIDLCompiler.scala:165)
	at izumi.idealingua.compiler.CommandlineIDLCompiler$.runCompiler(CommandlineIDLCompiler.scala:165)
	at izumi.idealingua.compiler.CommandlineIDLCompiler$.$anonfun$runCompilations$3(CommandlineIDLCompiler.scala:134)
	at izumi.idealingua.compiler.CommandlineIDLCompiler$.$anonfun$runCompilations$3$adapted(CommandlineIDLCompiler.scala:133)
	at scala.collection.immutable.List.foreach(List.scala:431)
	at izumi.idealingua.compiler.CommandlineIDLCompiler$.runCompilations(CommandlineIDLCompiler.scala:133)
	at izumi.idealingua.compiler.CommandlineIDLCompiler$.main(CommandlineIDLCompiler.scala:41)
	at izumi.idealingua.compiler.CommandlineIDLCompiler.main(CommandlineIDLCompiler.scala)