Protectedconstructorprotected (not private) so ESPSigV4APIManager can extends this
class and call super(). External construction is blocked by the class
itself not being publicly exported from services/export.ts.
GET from the User API base with a Cognito Bearer token.
POST to the User API base with no authentication (e.g. token/refresh). Overridden by subclasses that need signing.
Optionaldata: unknownPOST to the User API base with a Cognito Bearer token
(CognitoAuthorizer / cognito_user_pools).
PUT to the User API base with a Cognito Bearer token.
ProtectedrequestStatic_constructInternalFriend-access hook used only by initializeAPIManager in this module.
StaticgetReturns the singleton constructed by SDK bootstrap.
Base API manager: plain HTTP calls with no signing. Use for unauthenticated endpoints (e.g. token/refresh) and endpoints that carry a Cognito bearer token in the
Authorizationheader. ESPSigV4APIManager extends this and adds SigV4 for authenticated calls.