Adds the specified NVIDIA Cloud Account to the set of authorized accounts that can invoke the specified function version. If the specified function version does not have any existing inheritable authorized accounts, it results in a response with status 404. If the specified account is already in the set of existing authorized accounts that are directly associated with the function version, it results in a response wit status code 409. If a function is public, then Account Admin cannot perform this operation. Access to this functionality mandates the inclusion of a bearer token with the 'authorize_clients' scope in the HTTP Authorization header