Extracts the token extract id the access token exists or returning an empty extract
if there is no one on the context it may occasionally causes Unauthorized response
since the token extract is empty
Pre-defined custom RequestInterceptor for Feign Requests It uses the
OAuth2ClientContext provided from the environment and
construct a new header on the request before it is made by Feign
Fully customizable constructor for changing token type and header name, in cases of
Bearer and Authorization is not the default such as "bearer", "authorization"
Pre-filter that adds an OAuth2 access token as a downstream authorization header if it
can detect the token as part of the currently authenticated principal.