@Rule
    TestNameTestDirectoryProvider tmpDir = new TestNameTestDirectoryProvider(ClasspathWalkerTest.class)
    def walker = new ClasspathWalker(TestFiles.fileSystem())

    def "skips missing file"() {
        def visitor = Mock(ClasspathEntryVisitor)

        when:
        walker.visit(tmpDir.file("missing"), visitor)

        then:
        0 * visitor._
    }

	"cmd/compile/internal/types"
	"cmd/internal/obj"
	"cmd/internal/src"
)

// walkSwitch walks a switch statement.
func walkSwitch(sw *ir.SwitchStmt) {
	// Guard against double walk, see #25776.
	if sw.Walked() {
		return // Was fatal, but eliminating every possible source of double-walking is hard
	}
	sw.SetWalked(true)

	if sw.Tag != nil && sw.Tag.Op() == ir.OTYPESW {
		walkSwitchType(sw)
	} else {

  // Walk the input and output dependencies of the Ops in `operations` to form
  // the closer of Ops needed to evaluate 'operations'. Input dependencies are
  // walked if 'predecessors' is true and output dependencies are walked if
  // 'successors' is true. In either case, if a discoverd Op is in the
  // 'ops_to_avoid' set, then the dependency walking is terminated.

    private final Deque<Object> queue = new ArrayDeque<Object>();
    private final CachingDirectedGraphWalker<Object, T> walker;
    private Task task;

    public CachingTaskDependencyResolveContext(Collection<? extends WorkDependencyResolver<T>> workResolvers) {
        this.walker = new CachingDirectedGraphWalker<>(new TaskGraphImpl(workResolvers));
    }

        List<String> submodulePaths = new ArrayList<>();
        try {
            SubmoduleWalk walker = SubmoduleWalk.forIndex(git.getRepository());
            try {
                while (walker.next()) {
                    Repository submodule = walker.getRepository();
                    try {
                        submodulePaths.add(walker.getPath());
                        Git.wrap(submodule).pull().call();

			orig := &def.Schema
			if ret := pruneEnums(orig); ret != orig {
				def.Schema = *ret
				defs[gvk] = def
			}
		}
	}
}

func pruneEnums(schema *spec.Schema) *spec.Schema {
	walker := schemamutation.Walker{
		SchemaCallback: func(schema *spec.Schema) *spec.Schema {
			orig := schema
			clone := func() {
				if orig == schema { // if schema has not been mutated yet
					schema = new(spec.Schema)

    }

    public Map<String, String> getAttributes() {
        return attributes;
    }

    public FileCollection resolve() {
        try {
            walker.add(queue);
            return new UnionFileCollection(taskDependencyFactory, walker.findValues());
        } finally {
            queue.clear();
        }
    }

    /**

	truth, ok := isTrue(indirectInterface(val))
	if !ok {
		s.errorf("if/with can't use %v", val)
	}
	if truth {
		if typ == parse.NodeWith {
			s.walk(val, list)
		} else {
			s.walk(dot, list)
		}
	} else if elseList != nil {
		s.walk(dot, elseList)
	}
}

// IsTrue reports whether the value is 'true', in the sense of not the zero of its type,

        GetInputFilesVisitor visitor = new GetInputFilesVisitor(task.toString(), fileCollectionFactory)
        def walker = task.getServices().get(PropertyWalker)
        TaskPropertyUtils.visitProperties(walker, task, visitor)
        return new CompositeFileCollection() {
            @Override
            String getDisplayName() {
                return task + " input files"

        def visitor = new GetInputPropertiesVisitor()
        TaskPropertyUtils.visitProperties(walker, task, visitor)
        return visitor.properties.collectEntries { [it.propertyName, InputParameterUtils.prepareInputParameterValue(it.value)] }
    }

    def inputFileProperties() {
        def inputFiles = [:]
        TaskPropertyUtils.visitProperties(walker, task, new PropertyVisitor() {
            @Override
            void visitInputFileProperty(