Determines if the response will be structured:

• As a flat object where all categories and subcategories are listed separately under different fields. See the example response Flat Response.
• As a map where all categories are listed as objects themselves with their respective subcategories listed in fields within the category objects. See the example response Map Response.

The name of the model for which categories should be returned. See the List Categorisation Models V2 endpoint for available model names.

Filter out categories that do not have the specified label. If unset, endpoint will include all labels

The API Client Identifier (Service Application Identifier).