},
				TimeoutConfig: ctx.Settings().GatewayConformanceTimeoutConfig,
			}
			if rev := ctx.Settings().Revisions.Default(); rev != "" {
				opts.NamespaceLabels = map[string]string{
					"istio.io/rev": rev,
				}
			} else {
				opts.NamespaceLabels = map[string]string{
					"istio-injection": "enabled",
				}
			}
			ctx.Cleanup(func() {
				if !ctx.Failed() {
					return
				}

	// walked.
	pkgPathMap map[string]map[string]bool
	seenPkgMap map[*Package]bool

	// information collected during type-checking of a set of package files
	// (initialized by Files, valid only for the duration of check.Files;
	// maps and lists are allocated on demand)
	files         []*ast.File               // package files

	// walked.
	pkgPathMap map[string]map[string]bool
	seenPkgMap map[*Package]bool

	// information collected during type-checking of a set of package files
	// (initialized by Files, valid only for the duration of check.Files;
	// maps and lists are allocated on demand)
	files         []*syntax.File              // list of package files

	"errors"
	"fmt"
	"path/filepath"
	"runtime"
	"sync"

	corev1 "k8s.io/api/core/v1"

	"istio.io/istio/pkg/maps"
	"istio.io/istio/pkg/zdsapi"
)

var ErrPodNotFound = errors.New("netns not provided, but is needed as pod is not in cache")

type PodNetnsCache interface {
	ReadCurrentPodSnapshot() map[string]WorkloadInfo
}

// Hold a cache of node local pods with their netns

	networkTopology map[clusterIndex]string

	// configTopology maps each cluster to the cluster that runs it's config.
	// If the cluster runs its own config, the cluster will map to itself (e.g. 0->0)
	// By default, we use the controlPlaneTopology as the config topology.
	configTopology clusterTopology
}

func (s *Settings) clone() *Settings {
	c := *s

// SortedMap is a slice of KeyValue pairs that simplifies sorting
// and iterating over map entries.
//
// Each KeyValue pair contains a map key and its corresponding value.
type SortedMap []KeyValue

// KeyValue holds a single key and value pair found in a map.
type KeyValue struct {
	Key, Value reflect.Value
}

// Sort accepts a map and returns a SortedMap that has the same keys and

	wire    wireType
}

// typeInfoMap is an atomic pointer to map[reflect.Type]*typeInfo.
// It's updated copy-on-write. Readers just do an atomic load
// to get the current version of the map. Writers make a full copy of
// the map and atomically update the pointer to point to the new map.
// Under heavy read contention, this is significantly faster than a map
// protected by a mutex.
var typeInfoMap atomic.Value

	IgnoredFiles              []string
	ImportMap                 map[string]string // maps import path to package path
	PackageFile               map[string]string // maps package path to file of type information
	Standard                  map[string]bool   // package belongs to standard library
	PackageVetx               map[string]string // maps package path to file of fact information

    public File getModuleMapFile(final ModuleMap moduleMap) {
        final String hash = moduleMap.getHashCode().toCompactString();
        return cache.useCache(() -> {
            File dir = new File(cache.getBaseDir(), "maps/" + hash + "/" + moduleMap.getModuleName());
            File moduleMapFile = new File(dir, "module.modulemap");
            if (!moduleMapFile.isFile()) {

	Description         string
	OriginalObj         map[string]interface{}
	ExpectedWithNull    map[string]interface{}
	ExpectedWithoutNull map[string]interface{}
}

var filterNullTestCaseData = []byte(`
testCases:
  - description: nil original
    originalObj: {}
    expectedWithNull: {}
    expectedWithoutNull: {}
  - description: simple map
    originalObj:
      nilKey: null
      nonNilKey: foo