@type t() :: %Envoy.Config.Core.V3.ConfigSource{
__unknown_fields__: [
{field_number :: integer(), Protobuf.Wire.Types.wire_type(),
value :: term()}
],
authorities: [Xds.Core.V3.Authority.t()],
config_source_specifier:
{:path, String.t()}
| {:api_config_source, Envoy.Config.Core.V3.ApiConfigSource.t() | nil}
| {:ads, Envoy.Config.Core.V3.AggregatedConfigSource.t() | nil}
| {:self, Envoy.Config.Core.V3.SelfConfigSource.t() | nil}
| {:path_config_source, Envoy.Config.Core.V3.PathConfigSource.t() | nil}
| nil,
initial_fetch_timeout: Google.Protobuf.Duration.t() | nil,
resource_api_version: Envoy.Config.Core.V3.ApiVersion.t()
}