Bug 121498 When datasource/dataset deleted, the datasource/dataset property binding element haven't been deleted
When deleted the datasource/dataset, the datasource/dataset property binding element haven't been deleted. Expected result: This operation must be a transaction.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DesignElementHandle.java
}
		catch ( CloneNotSupportedException e )
		{
			assert false;
		}
		return null;
	}
	/**
	 * Copies all properties to the target element. The following properties
	 * will not be copied.
	 * <ul>
	 * <li><code>DesignElement.NAME_PROP</code>
	 * <li><code>DesignElement.EXTENDS_PROP</code>
	 * </ul>
	 * 
	 * The <code>targetHandle</code> should be in the same report as this
	 * element. And this method should be called in one transaction.
	 * 
	 * @param propName
	 *            name of the property to copy
	 * @param targetHandle
	 *            the target element handle
	 * @throws SemanticException
	 *             if the target element type is not as same as this element
	 *             type, or property is not defined .
	 * @throws IllegalArgumentException
	 *             if the target element is not in the same report as this
	 *             element.
	 */
	public void copyPropertyTo( String propName,