Use forward declarations

source/RobotAPI/libraries/armem/core/aron_conversions.cpp

 #include "aron_conversions.h"
 
+#include <RobotAPI/libraries/armem/core/MemoryID.h>
+#include <RobotAPI/libraries/armem/aron/MemoryID.aron.generated.h>
+
 
 void armarx::armem::fromAron(const arondto::MemoryID& dto, MemoryID& bo)
 {

source/RobotAPI/libraries/armem/core/aron_conversions.h

 #pragma once
 
-#include <RobotAPI/libraries/armem/core/MemoryID.h>
-#include <RobotAPI/libraries/armem/aron/MemoryID.aron.generated.h>
+#include "forward_declarations.h"
+
+#include <ostream>
 
 
 namespace armarx::armem

source/RobotAPI/libraries/armem/core/forward_declarations.h

@@ -18,6 +18,11 @@ namespace armarx::armem
     class EntityUpdateResult;
 }
 
+namespace armarx::armem::arondto
+{
+    class MemoryID;
+}
+
 namespace armarx::armem::base
 {
     struct NoData;
@@ -56,3 +61,4 @@ namespace armarx::armem::server::wm
     class CoreSegment;
     class Memory;
 }
+

source/RobotAPI/libraries/armem_gui/instance/tree_builders/TypedDataTreeBuilder.cpp

@@ -4,6 +4,7 @@
 
 #include <RobotAPI/libraries/aron/common/aron_conversions.h>
 #include <RobotAPI/libraries/armem/core/aron_conversions.h>
+#include <RobotAPI/libraries/armem/core/MemoryID.h>
 #include <RobotAPI/libraries/armem/aron/MemoryID.aron.generated.h>
 
 #include <RobotAPI/libraries/armem_gui/TreeWidgetBuilder.h>