I didn't add the token to this field as it already contains a string such as `"12345;B8AE1CF6-9DEF-C876-1BB4-9B382E6CE520;4193753;OHMETD7DFK;purchase"` which is built up from 5 separate pieces of data. Adding a the token to this field will make it rather hard to access requiring parsing a `;` separated string and knowing the position the token is stored in. The token may or may not be present in the response from the gateway so the resulting `Response#authorization` field will contain a varying number of items.

If you want to avoid having a custom response I'd suggest the token is retrieved from the `params` rather than complicating the `authorization` field even further.