return nil
	}
	if strings.Contains(err.Error(), "executable file not found in $PATH") {
		return nil
	}
	return err
}

// getProxyLogs fetches proxy logs for the given namespace/pod/container and stores the output in global structs.
// Runs if a goroutine, with errors reported through gErrors.
// TODO(stewartbutler): output the logs to a more robust/complete structure.

)

// Cache models a Wasm module cache.
type Cache interface {
	Get(url string, opts GetOptions) (string, error)
	Cleanup()
}

// LocalFileCache for downloaded Wasm modules. Currently it stores the Wasm module as local file.
type LocalFileCache struct {
	// Map from Wasm module checksum to cache entry.
	modules map[moduleKey]*cacheEntry
	// Map from tagged URL to checksum
	checksums map[string]*checksumEntry

type Controller struct {
	XdsUpdater model.XDSUpdater

	store     model.ConfigStore
	clusterID cluster.ID

	// This lock is to make multi ops on the below stores. For example, in some case,
	// it requires delete all instances and then update new ones.
	mutex sync.RWMutex

	serviceInstances serviceInstancesStore

	// This is only used for test
	stop chan struct{}

	sync.RWMutex
	// servicesMap stores hostname ==> service, it is used to reduce convertService calls.
	servicesMap map[host.Name]*model.Service
	// nodeSelectorsForServices stores hostname => label selectors that can be used to
	// refine the set of node port IPs for a service.
	nodeSelectorsForServices map[host.Name]labels.Instance

		},
	},
})

// clusterWrapper wraps Cluster object along with upstream protocol options.
type clusterWrapper struct {
	cluster *cluster.Cluster
	// httpProtocolOptions stores the HttpProtocolOptions which will be marshaled when build is called.
	httpProtocolOptions *http.HttpProtocolOptions
}

// metadataCerts hosts client certificate related metadata specified in proxy metadata.

	"istio.io/istio/pkg/log"
	"istio.io/istio/pkg/test"
	"istio.io/istio/pkg/test/env"
	"istio.io/istio/pkg/test/util/assert"
	"istio.io/istio/pkg/test/util/retry"
)

type handler struct {
	// LastALPN stores the most recent ALPN requested. This is needed to determine info about a request,
	// since the appProber strips all headers/responses.
	lastAlpn *atomic.String
}

const (
	testHeader      = "Some-Header"