To enable this mode you must set the
base_identity_provided_by field in your API Definitions to one of the supported chained enums below:
The provider set here will then be the one that provides the session object that determines rate limits, ACL rules and quotas.
Tyk will chain the auth mechanisms as they appear in the code and will default to auth token if none are specified. You can explicitly set auth token support by setting
use_standard_auth to true.