Bug 188829 Move the item ,the trans of the model don't close.
1:New report design. 2:Add a Embedded image. 3:Add another imge , then drag the second imge to the first position. 4:Change the size of the first image. Expected: Image change the size. Now: Image size don't change.
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/command/ContentCommandTest.java
* hold one
	 * <li>the content type is not match with the container
	 * </ul>
	 * 
	 * @throws Exception
	 *             if any exception
	 */
	public void testAdd( ) throws Exception
	{
		
		Cell cell = new Cell( );
		Label child = new Label( );
		Label label = new Label( );
		containerHandle.getSlot( 0 ).add( label.getHandle( design ) );
		
		cell.getHandle( design ).getSlot( 0 ).add( child.getHandle( design ) );
		
		assertNull( label.getHandle( design ).getSlot( 0 ) );
		
		
		try
		{
			SimpleMasterPageHandle pageHandle = designHandle
					.getElementFactory( ).newSimpleMasterPage( "simplepage" ); 
			designHandle.getMasterPages( ).add( pageHandle );
			ContentCommand command = new ContentCommand( design,
					new ContainerContext( pageHandle.getElement( ),
							SimpleMasterPage.PAGE_HEADER_SLOT ) );
			command.add( new TextItem( ) );
			command = new ContentCommand( design,