Dataflow
constructor(method: String, serviceAccountTokenSettings: DataflowEndpointAuthenticationServiceAccountTokenResponse? = null, systemAssignedManagedIdentitySettings: DataflowEndpointAuthenticationSystemAssignedManagedIdentityResponse? = null, userAssignedManagedIdentitySettings: DataflowEndpointAuthenticationUserAssignedManagedIdentityResponse? = null, x509CertificateSettings: DataflowEndpointAuthenticationX509Response? = null)