@type t() :: %Envoy.Data.Accesslog.V3.HTTPResponseProperties{
__unknown_fields__: [
{field_number :: integer(), Protobuf.Wire.Types.wire_type(),
value :: term()}
],
downstream_header_bytes_sent: non_neg_integer(),
response_body_bytes: non_neg_integer(),
response_code: Google.Protobuf.UInt32Value.t() | nil,
response_code_details: String.t(),
response_headers: %{optional(String.t()) => String.t() | nil},
response_headers_bytes: non_neg_integer(),
response_trailers: %{optional(String.t()) => String.t() | nil},
upstream_header_bytes_received: non_neg_integer()
}