Bug 188027 PasteAction is diabled
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DesignElementHandle.java
*/
	public void dropAndClear( String propName, int posn )
			throws SemanticException
	{
		PropertyHandle propHandle = getPropertyHandle( propName );
		if ( propHandle != null )
		{
			propHandle.dropAndClear( posn );
		}
	}
	/**
	 * Drops a content element at the given position from the container, and
	 * unresolve any reference property which refers the element to drop.
	 * 
	 * @param propName
	 *            name of the property where the content resides
	 * @param posn
	 *            the position of the content to drop
	 * @throws SemanticException
	 *             if the position is out of range
	 */
	public void drop( String propName, int posn ) throws SemanticException
	{
		PropertyHandle propHandle = getPropertyHandle( propName );
		if ( propHandle != null )
		{
			propHandle.drop( posn );
		}
	}
}