diff --git a/build.sbt b/build.sbt
index 5077a57..cf04758 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 import sbtrelease.ReleasePlugin.autoImport.ReleaseTransformations.*
 
-ThisBuild / scalaVersion := "2.13.13"
+ThisBuild / scalaVersion := "2.13.14"
 
 lazy val root = (project in file("."))
   .settings(
@@ -21,8 +21,11 @@ lazy val root = (project in file("."))
       "org.scalatest" %% "scalatest" % "3.2.18" % Test,
     ),
     libraryDependencies ++= Seq(
-      "com.github.alexarchambault" %% "case-app" % "2.1.0-M26"
+      "com.github.alexarchambault" %% "case-app" % "2.1.0-M29"
     ),
+//    libraryDependencies ++= Seq(
+//      "org.graalvm.buildtools" % "graalvm-reachability-metadata" % "0.10.2"
+//    ),
     libraryDependencies ++= Seq(
       "io.circe" %% "circe-core",
       "io.circe" %% "circe-generic",
@@ -63,6 +66,7 @@ lazy val root = (project in file("."))
     graalVMNativeImageOptions ++= Seq(
       "--no-fallback",
       "-H:+ReportExceptionStackTraces",
+      "-H:+UnlockExperimentalVMOptions",
       "--report-unsupported-elements-at-runtime",
       "--enable-https",
       "--enable-http",
diff --git a/nixtest.sh b/nixtest.sh
new file mode 100755
index 0000000..d86c9cd
--- /dev/null
+++ b/nixtest.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+nix-shell --pure ./shell.nix --run ./test.sh
diff --git a/project/build.properties b/project/build.properties
index 58c9814..136f452 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version = 1.9.2
+sbt.version = 1.10.1
diff --git a/project/plugins.sbt b/project/plugins.sbt
index e7d6a8a..676cdb3 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,3 +1,3 @@
 //addSbtPlugin("org.jetbrains.scala" % "sbt-ide-settings" % "1.1.1")
-addSbtPlugin("com.github.sbt" % "sbt-native-packager" % "1.10.0")
+addSbtPlugin("com.github.sbt" % "sbt-native-packager" % "1.10.4")
 addSbtPlugin("io.7mind.izumi.sbt" % "sbt-izumi" % "0.0.101")
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..c8dfa84
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,5 @@
+{ pkgs ? import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/24.05.tar.gz") { } }:
+
+pkgs.mkShell {
+  nativeBuildInputs = with pkgs.buildPackages; [ ncurses graalvm-ce sbt dotnet-sdk_7 ];
+}
diff --git a/src/main/resources/META-INF/native-image/reflect-config.json b/src/main/resources/META-INF/native-image/reflect-config.json
new file mode 100644
index 0000000..93e46a8
--- /dev/null
+++ b/src/main/resources/META-INF/native-image/reflect-config.json
@@ -0,0 +1,42 @@
+[
+{
+  "name":"[Lizumi.distage.model.plan.ExecutableOp;"
+},
+{
+  "name":"[Ljava.lang.String;"
+},
+{
+  "name":"com.intellij.rt.execution.application.AppMainV2$Agent",
+  "methods":[{"name":"premain","parameterTypes":["java.lang.String","java.lang.instrument.Instrumentation"] }]
+},
+{
+  "name":"izumi.distage.provisioning.strategies.dynamicproxy.DynamicProxyProvider$",
+  "fields":[{"name":"MODULE$"}]
+},
+{
+  "name":"java.lang.ClassValue"
+},
+{
+  "name":"java.lang.String"
+},
+{
+  "name":"java.lang.invoke.VarHandle",
+  "methods":[{"name":"releaseFence","parameterTypes":[] }]
+},
+{
+  "name":"java.util.concurrent.atomic.AtomicBoolean",
+  "fields":[{"name":"value"}]
+},
+{
+  "name":"java.util.concurrent.atomic.AtomicReference",
+  "fields":[{"name":"value"}]
+},
+{
+  "name":"scala.Symbol",
+  "methods":[{"name":"apply","parameterTypes":["java.lang.String"] }]
+},
+{
+  "name":"sun.security.provider.SHA2$SHA256",
+  "methods":[{"name":"<init>","parameterTypes":[] }]
+}
+]
diff --git a/src/main/scala/io/septimalmind/baboon/Baboon.scala b/src/main/scala/io/septimalmind/baboon/Baboon.scala
index 018e2fe..c622e04 100644
--- a/src/main/scala/io/septimalmind/baboon/Baboon.scala
+++ b/src/main/scala/io/septimalmind/baboon/Baboon.scala
@@ -33,6 +33,7 @@ case class Options(
   csExcludeGlobalUsings: Option[Boolean],
   omitMostRecentVersionSuffixFromPaths: Option[Boolean],
   omitMostRecentVersionSuffixFromNamespaces: Option[Boolean],
+  csUseCompactAdtForm: Option[Boolean],
 )
 
 sealed trait RuntimeGenOpt
@@ -71,7 +72,7 @@ object Baboon {
           !opts.csExcludeGlobalUsings.getOrElse(false),
           opts.omitMostRecentVersionSuffixFromPaths.getOrElse(true),
           opts.omitMostRecentVersionSuffixFromNamespaces.getOrElse(true),
-          csUseCompactAdtForm = true,
+          opts.csUseCompactAdtForm.getOrElse(true),
         )
         Injector
           .NoCycles()
diff --git a/src/main/scala/io/septimalmind/baboon/translator/csharp/CSNSJsonCodecGenerator.scala b/src/main/scala/io/septimalmind/baboon/translator/csharp/CSNSJsonCodecGenerator.scala
index 6f9ce17..bcf5659 100644
--- a/src/main/scala/io/septimalmind/baboon/translator/csharp/CSNSJsonCodecGenerator.scala
+++ b/src/main/scala/io/septimalmind/baboon/translator/csharp/CSNSJsonCodecGenerator.scala
@@ -8,12 +8,15 @@ import izumi.fundamentals.platform.strings.TextTree.*
 
 class CSNSJsonCodecGenerator(trans: CSTypeTranslator, tools: CSDefnTools)
     extends CSCodecTranslator {
+  val csWrappedAdtBranchCodecs = true
+
   override def translate(defn: DomainMember.User,
                          csRef: CSValue.CSType,
                          srcRef: CSValue.CSType,
                          domain: Domain,
                          evo: BaboonEvolution,
   ): TextTree[CSValue] = {
+
     val version = domain.version
     val (enc, dec) = defn.defn match {
       case d: Typedef.Dto =>
@@ -135,21 +138,43 @@ class CSNSJsonCodecGenerator(trans: CSTypeTranslator, tools: CSDefnTools)
     )
   }
 
+  private def wrapAdtBranchEncoder(
+    branchName: String,
+    tree: TextTree[CSValue]
+  ): TextTree[CSValue] = {
+    q"""new $nsJObject(new $nsJProperty("$branchName", $tree))"""
+  }
+
   private def genAdtBodies(
     name: CSValue.CSType,
     a: Typedef.Adt
-  ): (TextTree[CSValue.CSType], TextTree[Nothing]) = {
+  ): (TextTree[CSValue], TextTree[Nothing]) = {
+
     val branches = a.members.toList.map { m =>
       val branchNs = q"${trans.adtNsName(a.id)}"
       val branchName = m.name.name
       val fqBranch = q"$branchNs.$branchName"
+      val routedBranchEncoder =
+        q"${fqBranch}_JsonCodec.Instance.Encode(($fqBranch)value)"
+
+      val branchEncoder = if (csWrappedAdtBranchCodecs) {
+        routedBranchEncoder
+      } else {
+        wrapAdtBranchEncoder(branchName, routedBranchEncoder)
+      }
+
+      val branchValue = if (csWrappedAdtBranchCodecs) {
+        q"wire"
+      } else {
+        q"head.Value"
+      }
 
       (q"""if (value is $fqBranch)
            |{
-           |    return new $nsJObject(new $nsJProperty("$branchName", ${fqBranch}_JsonCodec.Instance.Encode(($fqBranch)value)));
+           |    return $branchEncoder;
            |}""".stripMargin, q"""if (head.Name == "$branchName")
            |{
-           |    return ${fqBranch}_JsonCodec.Instance.Decode(head.Value);
+           |    return ${fqBranch}_JsonCodec.Instance.Decode($branchValue);
            |}""".stripMargin)
 
     }
@@ -206,19 +231,37 @@ class CSNSJsonCodecGenerator(trans: CSTypeTranslator, tools: CSDefnTools)
       )
     }
 
-    (q"""return new $nsJObject(
-         |${fields.map(_._1).join(",\n").shift(4)}
-         |);""".stripMargin, q"""var asObject = wire.Value<JObject>();
-         |
-         |if (asObject == null)
-         |{
-         |    throw new ArgumentException($$"Cannot decode {wire} to ${name.name}: object expected");
-         |}
-         |
-         |return new $name(
-         |${fields.map(_._2).join(",\n").shift(4)}
-         |);
-         """.stripMargin)
+    val mainEnc = q"""new $nsJObject(
+                           |${fields.map(_._1).join(",\n").shift(4)}
+                           |)""".stripMargin
+
+    val fullEnc = d.id.owner match {
+      case Owner.Adt(_) if csWrappedAdtBranchCodecs =>
+        wrapAdtBranchEncoder(d.id.name.name, mainEnc)
+      case _ => mainEnc
+    }
+
+    val encBody = q"""return $fullEnc;"""
+
+    val fullDec = d.id.owner match {
+      case Owner.Adt(_) if csWrappedAdtBranchCodecs =>
+        q"wire.Value<JObject>().Properties().First().Value.Value<JObject>()"
+      case _ => q"wire.Value<JObject>()"
+    }
+
+    val decBody = q"""var asObject = $fullDec;
+                     |
+                     |if (asObject == null)
+                     |{
+                     |    throw new ArgumentException($$"Cannot decode {wire} to ${name.name}: object expected");
+                     |}
+                     |
+                     |return new $name(
+                     |${fields.map(_._2).join(",\n").shift(4)}
+                     |);
+         """.stripMargin
+
+    (encBody, decBody)
   }
 
   private def mkEncoder(tpe: TypeRef,
diff --git a/test.sh b/test.sh
new file mode 100755
index 0000000..e3f0a26
--- /dev/null
+++ b/test.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+set -x
+set -e
+
+sbt GraalVMNativeImage/packageBin
+
+target/graalvm-native-image/baboon \
+          --model-dir ./src/test/resources/baboon/ \
+          --output ./test/cs-stub/ConversionsTest/Generated \
+          --test-output ./test/cs-stub/ConversionsTest/Generated
+pushd .
+
+cd ./test/cs-stub
+dotnet build
+dotnet test ConversionsTest/ConversionsTest.csproj
+
+popd
\ No newline at end of file
diff --git a/test/cs-stub/.gitignore b/test/cs-stub/.gitignore
index b59f578..c948cb8 100644
--- a/test/cs-stub/.gitignore
+++ b/test/cs-stub/.gitignore
@@ -1,5 +1,7 @@
 Generated/
 
+global.json
+
 bin/
 obj/
 /packages/