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diff --git a/compiler/luci/export/src/CircleExporterImpl.h b/compiler/luci/export/src/CircleExporterImpl.h
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index 000000000..e5d5b5a00
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+++ b/compiler/luci/export/src/CircleExporterImpl.h
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+/*
+ * Copyright (c) 2020 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * 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.
+ */
+
+#ifndef __CIRCLE_EXPORTER_IMPL_H__
+#define __CIRCLE_EXPORTER_IMPL_H__
+
+#include "luci/CircleExporter.h"
+#include "luci/IR/Module.h"
+
+#include "SerializedData.h"
+
+#include "SerializedData.h"
+
+#include <mio/circle/schema_generated.h>
+
+#include <loco.h>
+
+namespace luci
+{
+
+/**
+ * internal implementation of interface exporter class
+ */
+class CircleExporterImpl
+{
+public:
+  CircleExporterImpl() = delete;
+  ~CircleExporterImpl() = default;
+
+  explicit CircleExporterImpl(loco::Graph *graph);
+  explicit CircleExporterImpl(Module *module);
+
+  /**
+   * @return pointer to buffer with serialized graph
+   */
+  const char *getBufferPointer() const;
+
+  /**
+   * @return size of buffer with serialized graph
+   */
+  size_t getBufferSize() const;
+
+private:
+  /**
+   * @brief create Subgraph using data stored in SerializedGraphData
+   * @param gd information about serializer parts of model
+   * @return offset in buffer corresponding to serialized subgraph
+   */
+  flatbuffers::Offset<circle::SubGraph> exportSubgraph(SerializedGraphData &gd);
+
+  /**
+   * @brief root function that writes graph into internal buffer
+   * @param graph
+   */
+  void exportGraph(loco::Graph *graph);
+
+  /**
+   * @brief root function that writes Module into internal buffer
+   * @param module
+   */
+  void exportModule(Module *module);
+
+private:
+  flatbuffers::FlatBufferBuilder _builder;
+};
+
+} // namespace luci
+
+#endif // __CIRCLE_EXPORTER_IMPL_H__