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/src/org/eclipse/birt/report/model/command/AbstractContentCommand.java
import org.eclipse.birt.report.model.api.activity.SemanticException;
import org.eclipse.birt.report.model.api.command.ContentException;
import org.eclipse.birt.report.model.api.command.NameException;
import org.eclipse.birt.report.model.api.metadata.IPropertyType;
import org.eclipse.birt.report.model.core.ContainerContext;
import org.eclipse.birt.report.model.core.DesignElement;
import org.eclipse.birt.report.model.core.Module;
import org.eclipse.birt.report.model.elements.ContentElement;
import org.eclipse.birt.report.model.metadata.ElementDefn;
import org.eclipse.birt.report.model.metadata.IContainerDefn;
import org.eclipse.birt.report.model.metadata.PropertyDefn;
import org.eclipse.birt.report.model.metadata.SlotDefn;
import org.eclipse.birt.report.model.util.ContentExceptionFactory;
import org.eclipse.birt.report.model.util.LevelContentIterator;
/**
 * This class adds, deletes and moves content elements. Adding a content element
 * to a container is the only way to add a new element to the design. Similarly,
 * removing an element from its container is the only way to delete an element
 * from the design.
 * <p>
 * Note: be sure to use the move operation if your intent is to move an element
 * from one place to another. Do not use a drop followed by an add. The move
 * command verifies that the move can be done before starting the action. If you
 * instead do a drop followed by an add, you'll end up with the element deleted
 * if it cannot be added into its new location.
 * 
 */
abstract class AbstractContentCommand extends AbstractElementCommand
{
	/**