* Map.getOrDefault}</a>.
   *
   * @since 23.5 (but since 21.0 in the JRE <a
   *     href="https://github.com/google/guava#guava-google-core-libraries-for-java">flavor</a>).
   *     Note, however, that Java 8+ users can call this method with any version and flavor of
   *     Guava.
   */
  // @Override under Java 8 / API Level 24
  @CheckForNull

#   ZONE
function get-node-env() {
  # TODO(zmerlynn): Make this more reliable with retries.
  gcloud compute --project "${PROJECT}" ssh --zone "${ZONE}" "${NODE_NAMES[0]}" --command \
    "curl --fail --silent -H 'Metadata-Flavor: Google' \
      'http://metadata/computeMetadata/v1/instance/attributes/kube-env'" 2>/dev/null
}

# Read os distro information from /os/release on node.
# $1: The name of node
#
# Assumed vars:

				// curl -H "Metadata-Flavor: Google" 169.254.169.254/computeMetadata/v1/instance/service-accounts/default/identity
				opts := echo.CallOptions{
					Address: "169.254.169.254",
					Port:    echo.Port{ServicePort: 80},
					Scheme:  scheme.HTTP,
					HTTP: echo.HTTP{
						// TODO: detect which platform?
						Headers: headers.New().With("Metadata-Flavor", "Google").Build(),

    "curl --fail --silent -H 'Metadata-Flavor: Google' \
      'http://metadata/computeMetadata/v1/instance/attributes/kube-env'" 2>/dev/null
  gcloud compute --project "${PROJECT}" ssh --zone "${ZONE}" "${KUBE_MASTER}" --command \
    "curl --fail --silent -H 'Metadata-Flavor: Google' \
      'http://metadata/computeMetadata/v1/instance/attributes/kube-master-certs'" 2>/dev/null
}

function Get_IpAliasRange {
  $url = ("http://${GCE_METADATA_SERVER}/computeMetadata/v1/instance/" +
          "network-interfaces/0/ip-aliases/0")
  $client = New-Object Net.WebClient
  $client.Headers.Add('Metadata-Flavor', 'Google')
  return ($client.DownloadString($url)).Trim()
}

# Retrieves the pod CIDR and sets it in $env:POD_CIDR.
function Set-PodCidr {
  while($true) {
    $pod_cidr = Get_IpAliasRange

// past the end of dodata().
type dodataState struct {
	// Link context
	ctxt *Link
	// Data symbols bucketed by type.
	data [sym.SXREF][]loader.Sym
	// Max alignment for each flavor of data symbol.
	dataMaxAlign [sym.SXREF]int32
	// Overridden sym type
	symGroupType []sym.SymKind
	// Current data size so far.
	datsize int64
}

// A note on symType/setSymType below:
//

# duplicated there as well.
function get-metadata-value {
  local default="${2:-}"

  local status
  # shellcheck disable=SC2086
  curl ${CURL_FLAGS} \
    -H 'Metadata-Flavor: Google' \
    "http://metadata/computeMetadata/v1/${1}" \
  || status="$?"
  status="${status:-0}"

  if [[ "${status}" -eq 0 || -z "${default}" ]]; then
    return "${status}"
  else

#     nonccl:       Disable nccl support.
#
#
# Remote build execution options (only configured to work with TF team projects for now.)
#     rbe_base:  General RBE options shared by all flavors.
#     rbe_linux: General RBE options used on all linux builds.
#     rbe_win_base:   General RBE options used on all Windows builds. Not to be used standalone.
#     rbe_win_clang:  Options specific to compiling using Clang.
#

    error_msg: (String) String with one and only one '%s'. Formatted with each
      invalid response upon check_success(input) failure.
    suppress_default_error: (Bool) Suppress the above error message in favor of
      one from the check_success function.
    resolve_symlinks: (Bool) Translate symbolic links into the real filepath.
    n_ask_attempts: (Integer) Number of times to query for valid input before

	readinessFlags  *readinessFlags

	// duration used for graceful shutdown.
	shutdownDuration time.Duration

	// internalStop is closed when the server is shutdown. This should be avoided as much as possible, in
	// favor of AddStartFunc. This is only required if we *must* start something outside of this process.
	// For example, everything depends on mesh config, so we use it there rather than trying to sequence everything
	// in AddStartFunc