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diff --git a/src/core/model/RBAContentStateMaker.cpp b/src/core/model/RBAContentStateMaker.cpp
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+++ b/src/core/model/RBAContentStateMaker.cpp
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+/**
+ * Copyright (c) 2019 DENSO CORPORATION.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/// @file  RBAContentStateMaker.cpp
+/// @brief ContentState object generator abstract class
+
+#include "RBAContentStateMaker.hpp"
+#include "RBAContentState.hpp"
+#include "RBAJsonElement.hpp"
+#include "RBAModelElement.hpp"
+#include "RBAModelImpl.hpp"
+#include "RBAModelFactory.hpp"
+#include "RBAConstraintInfo.hpp"
+
+namespace rba
+{
+
+RBAContentStateMaker::RBAContentStateMaker(const std::string& label)
+  : RBARuleObjectMaker{label}
+{
+}
+
+RBAModelElement*
+RBAContentStateMaker::getInstance(RBAModelImpl* model,
+                                  const std::string& name,
+                                  RBAModelElement* owner)
+{
+  RBAModelElement* ret {nullptr};
+
+  const auto content = dynamic_cast<RBAContent*>(owner);
+  const auto uniqueName = content->getUniqueName() + "/" + name;
+
+  const auto element = model->findModelElement(uniqueName);
+  // exists in model
+  if(element != nullptr) {
+    ret = const_cast<RBAModelElement*>(element);
+  }
+  // not exists in modelmodel
+  else {
+    std::unique_ptr<RBAModelElement> inst {createInstance(name)};
+    const auto contentState = dynamic_cast<RBAContentState*>(inst.get());
+    contentState->setOwner(content);
+    ret =  model->addNamedElement(std::move(inst));
+  }
+
+  return ret;
+}
+
+RBAModelElement*
+RBAContentStateMaker::setProperty(RBAModelElement* element,
+                                  const RBAJsonElement* jsonElem,
+                                  RBAModelImpl* model,
+                                  RBAModelElement* owner)
+{
+  static_cast<void>(RBARuleObjectMaker::setProperty(element, jsonElem, model, owner));
+
+  RBAContentState* const state {dynamic_cast<RBAContentState*>(element)};
+
+  // Set priority
+  state->setPriority(jsonElem->findChildren("priority")->getInt());
+
+  model->addContentState(state);
+
+  return state;
+}
+
+}