CredentialsSourceInjectedIdentity indicates that a provider should use credentials via its (pod's) identity; i.e.

CredentialsSourceNone indicates that a provider does not require credentials.

CredentialsSourceSecret indicates that a provider should acquire credentials from a secret.

A Reference to a named object.

A SecretKeySelector is a reference to a secret key in an arbitrary namespace.

A SecretReference is a reference to a secret in an arbitrary namespace.

A CredentialsSource is a source from which provider credentials may be acquired.