// The ratio of cert lifetime to refresh a cert. For example, at 0.10 and 1 hour TTL,
	// we would refresh 6 minutes before expiration.
	SecretRotationGracePeriodRatio float64

	// STS port
	STSPort int

	// credential fetcher.
	CredFetcher CredFetcher

	// credential identity provider
	CredIdentityProvider string

	// Namespace corresponding to workload
	WorkloadNamespace string

    indicating its preferred use in language bindings for TensorFlow. What was
    previously `TF_Session` has been renamed to `TF_DeprecatedSession`.
*   Renamed `TF_Port` to `TF_Output` in the C API.
*   Removes RegisterShape from public API. Use C++ shape function registration
    instead. indexing now starts from 1 instead of 0, and `bus_id==0` is used