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
C.setExtendsElement( A );
		A.setStyle( style );
		
		assertEquals( A, containerHandle.get( 0 ) );
		assertEquals( B, A.getExtendsElement( ) );
		assertEquals( C, A.getDerived( ).get( 0 ) );
		assertEquals( A, C.getExtendsElement( ) );
		assertEquals( style, A.getStyle( ) );
		try
		{
			containerHandle.dropAndClear( A.getHandle( design ) );
			fail( );
		}
		catch ( Exception e )
		{
		}
		
		assertEquals( A, C.getExtendsElement( ) );
		assertEquals( A, B.getDerived( ).get( 0 ) );
		assertEquals( 1, style.getClientList( ).size( ) );
		assertNotNull( A.getStyle( ) );
		assertNotNull( A.getExtendsElement( ) );
	}
	/**
	 * Test after delete an element, whether references on the deleted contented
	 * were adjusted correctly.
	 * 
	 * Test case:
	 * 
	 * <ul>