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diff --git a/XMPFiles/source/FormatSupport/IFF/IChunkContainer.h b/XMPFiles/source/FormatSupport/IFF/IChunkContainer.h
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+++ b/XMPFiles/source/FormatSupport/IFF/IChunkContainer.h
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+// =================================================================================================
+// ADOBE SYSTEMS INCORPORATED
+// Copyright 2010 Adobe Systems Incorporated
+// All Rights Reserved
+//
+// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance with the terms
+// of the Adobe license agreement accompanying it.
+// =================================================================================================
+
+#ifndef _IChunkContainer_h_
+#define _IChunkContainer_h_
+
+#include "public/include/XMP_Environment.h"	// ! This must be the first include.
+
+namespace IFF_RIFF
+{
+
+/**
+	The interface IChunkContainer defines the access to child chunks of 
+	an existing chunk.
+*/
+
+class Chunk;
+
+class IChunkContainer
+{
+public:
+	virtual ~IChunkContainer() {};
+
+		/**
+		 * @return	Returns the number children chunks.
+		 */
+		virtual	XMP_Uns32 numChildren() const															= 0;
+		
+		/**
+		 * Returns a child node.
+		 *
+		 * @param	pos		position of the child node to return
+		 * @return			Returns the child node at the given position.
+		 */
+		virtual	Chunk* getChildAt( XMP_Uns32 pos ) const												= 0;
+
+		/**
+		 * Appends a child node at the end of the children list.
+		 *
+		 * @param	node		the new node
+		 * @param	adjustSizes	adjust size&offset of chunk and parents
+		 * @return				Returns the added node.
+		 */
+		virtual	void appendChild( Chunk* node, XMP_Bool adjustSizes = true )							= 0;
+
+		/**
+		 * Inserts a child node at a certain position.
+		 *
+		 * @param	pos			position in the children list to add the new node
+		 * @param	node		the new node
+		 * @return				Returns the added node.
+		 */
+		virtual	void insertChildAt( XMP_Uns32 pos, Chunk* node )			= 0;
+
+		/**
+		 * Removes a child node at a given position.
+		 *
+		 * @param	pos				position of the node to delete in the children list
+		 *
+		 * @return					The removed chunk
+		 */
+		virtual	Chunk* removeChildAt( XMP_Uns32 pos )						= 0;
+
+		/**
+		 * Remove child at the passed position and insert the new chunk
+		 *
+		 * @param pos			Position of chunk that will be replaced
+		 * @param chunk			New chunk
+		 *
+		 * @return				Replaced chunk
+		 */
+		virtual Chunk* replaceChildAt( XMP_Uns32 pos, Chunk* node )						= 0;
+
+		/** creates a string representation of the chunk and its children. 
+		*/
+		virtual std::string toString( std::string tab = std::string() , XMP_Bool showOriginal = false ) = 0;
+};
+
+}
+
+#endif