return getStringProperty( ImageItem.TYPE_EXPR_PROP );
return getStringProperty( IImageItemModel.TYPE_EXPR_PROP );
	public String getTypeExpression( )	{		if ( DesignChoiceConstants.IMAGE_REF_TYPE_EXPR				.equalsIgnoreCase( getSource( ) ) )		{			return getStringProperty( ImageItem.TYPE_EXPR_PROP );		}		return null;	}