return null;
return DesignChoiceConstants.NUMBER_FORMAT_TYPE_UNFORMATTED;
	public String getFormatString( )	{		if ( category == null && pattern == null )		{			return null;		}		if ( category == null )		{			category = ""; //$NON-NLS-1$		}		if ( pattern == null )		{			pattern = ""; //$NON-NLS-1$		}		if ( category.equals( pattern ) )		{			return category;		}		return category + ":" + pattern; //$NON-NLS-1$	}