NoArg: Initialize properties in noarg constructor (KT-16692)

compiler/backend/src/org/jetbrains/kotlin/codegen/ClassBodyCodegen.java

@@ -35,8 +35,13 @@ import java.util.List;
 import static org.jetbrains.kotlin.codegen.binding.CodegenBinding.enumEntryNeedSubclass;
 
 public abstract class ClassBodyCodegen extends MemberCodegen<KtPureClassOrObject> {
+    @NotNull
     public final KtPureClassOrObject myClass;
+
+    @NotNull
     public final OwnerKind kind;
+
+    @NotNull
     public final ClassDescriptor descriptor;
 
     protected ClassBodyCodegen(

compiler/backend/src/org/jetbrains/kotlin/codegen/ImplementationBodyCodegen.java

@@ -1047,7 +1047,7 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
         }
     }
 
-    private void generateInitializers(@NotNull ExpressionCodegen codegen) {
+    public void generateInitializers(@NotNull ExpressionCodegen codegen) {
         generateInitializers(() -> codegen);
     }