@property<EOL><INDENT>def product_type(self):<DEDENT>
return self._product_type<EOL>
Gets the product_type of this CatalogItem.
The product type of the item. May not be changed once an item has been created.  Only items of product type `REGULAR` may be created by this API; items with other product types are read-only. See [CatalogItemProductType](#type-catalogitemproducttype) for possible values

:return: The product_type of this CatalogItem.
:rtype: str