Bug 199834 Enable access to IContent object in IReportItemPresentation layer
In IReportItemPresentation layer, the extended item may want to access properties from current IContent object, for example, bookmark, content style. So we need expose the content object in this layer.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/presentation/LocalizedContentVisitor.java
Object value = content.accept( this, content );
		return (IContent) value;
	}
	
	protected IContent localizeAllChildren( IContent content )
	{
		ArrayList children = (ArrayList) content.getChildren( );
		if ( children != null )
		{			
			for ( int i = 0; i < children.size( ); i++ )
			{
				IContent child = (IContent) children.get( i );
				IContent localChild = localize( child );
				if ( localChild != child )
				{
					
					children.set( i, localChild );
					
					
					localChild.setParent( content );
					
					
					
					Collection childrenOfLocalChild = localChild.getChildren( );
					Iterator iter = child.getChildren( ).iterator( );
					while ( iter.hasNext( ) )
					{
						IContent childOfChild = (IContent) iter.next( );
						if ( !childrenOfLocalChild.contains( childOfChild ) )
						{