echo "Cleaning up kind cluster"
    kind delete cluster --name "${NAME}" -v9 || true
  fi
}

# check_default_cluster_yaml checks the presence of default cluster YAML
# It returns 1 if it is not present
function check_default_cluster_yaml() {
  if [[ -z "${DEFAULT_CLUSTER_YAML:-}" ]]; then
    echo 'DEFAULT_CLUSTER_YAML file must be specified. Exiting...'
    return 1
  fi
}

function setup_kind_cluster_retry() {

# Envoy binary variables
ISTIO_ENVOY_BASE_URL="${ISTIO_ENVOY_BASE_URL:-https://storage.googleapis.com/istio-build/proxy}"

# If we are not using the default, assume its private and we need to authenticate
if [[ "${ISTIO_ENVOY_BASE_URL}" != "https://storage.googleapis.com/istio-build/proxy" ]]; then
  AUTH_HEADER="Authorization: Bearer $(gcloud auth print-access-token)"

  popd
}

# ztunnel binary vars (TODO handle debug builds, arm, darwin etc.)
ISTIO_ZTUNNEL_BASE_URL="${ISTIO_ZTUNNEL_BASE_URL:-https://storage.googleapis.com/istio-build/ztunnel}"

# If we are not using the default, assume its private and we need to authenticate
if [[ "${ISTIO_ZTUNNEL_BASE_URL}" != "https://storage.googleapis.com/istio-build/ztunnel" ]]; then
  AUTH_HEADER="Authorization: Bearer $(gcloud auth print-access-token)"