Object value = getProperty( Style.DATE_TIME_FORMAT_PROP );
Object value = getProperty( IStyleModel.DATE_TIME_FORMAT_PROP );
	public String getDateTimeFormat( )	{		Object value = getProperty( Style.DATE_TIME_FORMAT_PROP );		if ( value == null )			return null;		assert value instanceof DateTimeFormatValue;		return ( (DateTimeFormatValue) value ).getPattern( );	}