Finds the token from a requests parameter, shopping cart, or engine since this
is the first step engine creates a new form state if the form is being
submitted.
This class is a copy from DialogDAM because of MGNLSTK-769 and the method i need to override is private
This dialog is loaded when control=dam is selected.
Generates shop basic page structure, one productcategory page, productsearchresult page,
keywordsearchresult (to use with ee only) page, productdetail, checkoutform.