}

    static Map<String, Object> getProperties(TaskInternal task, PropertyWalker propertyWalker) {
        GetInputPropertiesVisitor visitor = new GetInputPropertiesVisitor()
        TaskPropertyUtils.visitProperties(propertyWalker, task, visitor)
        return visitor.getProperties().collectEntries { [it.propertyName, it.value.call()] }
    }

    static FileCollection getInputFiles(DefaultTask task) {

        return false;
    }

    @Override
    public void explain(DiagnosticsVisitor visitor) {
        visitor.node(message);
        if (!locations.isEmpty()) {
            visitor.startChildren();
            for (String location : locations) {
                visitor.node(location);
            }
            visitor.endChildren();
        }
    }

        Visitor visitor = new Visitor();
        visitor.visit(classLoader);
        return visitor.getHash();
    }

    private class Visitor extends ClassLoaderVisitor {
        private final Hasher hasher = Hashing.newHasher();
        private boolean foundUnknown;

        @Override
        public void visit(ClassLoader classLoader) {
            if (addToHash(classLoader)) {

    }

    @Override
    public FileTree visit(FileVisitor visitor) {
        tree.visit(visitor);
        return this;
    }

    @Override
    public void visitContentsAsFileTrees(Consumer<FileTreeInternal> visitor) {
        visitor.accept(this);
    }

    @Override
    protected void visitContents(FileCollectionStructureVisitor visitor) {

    @Nullable Service getFactory(Class<?> type);

    /**
     * Collects all services of the given type.
     *
     * @return A visitor that should be used for all subsequent services.
     */
    Visitor getAll(Class<?> serviceType, Visitor visitor);

    interface Visitor {
        void visit(Service service);
    }

func Walk(root Node, v Visitor) {
	walker{v}.node(root)
}

// A Visitor's Visit method is invoked for each node encountered by Walk.
// If the result visitor w is not nil, Walk visits each of the children
// of node with the visitor w, followed by a call of w.Visit(nil).
type Visitor interface {
	Visit(node Node) (w Visitor)
}

type walker struct {
	v Visitor
}

func (w walker) node(n Node) {

            }
        }

        FormattingDiagnosticsVisitor visitor = new FormattingDiagnosticsVisitor();
        describe(visitor);

        throw new UnsupportedNotationException(notation, failure, invalidNotationMessage, visitor.getCandidates());
    }

	"strings"
	"testing"
)

type ShortPosition struct {
	Line    int
	Column  int
	Visited bool
}

type IdentPositionInfo map[string][]ShortPosition

type Visitor struct {
	identPosInfo IdentPositionInfo
	fset         *token.FileSet
	t            *testing.T
}

func (v *Visitor) Visit(node ast.Node) ast.Visitor {
	if ident, ok := node.(*ast.Ident); ok {

                visitor.node(entry.getKey());
                visitor.startChildren();
                entry.getValue().explain(visitor);
                visitor.endChildren();
            }
            if (candidates.isEmpty()) {
                visitor.node("No tool chain plugin applied.");
            }
            visitor.endChildren();
        }

        protected abstract String getUnavailabilityReason();
    }

                    action.processFile(detailsInternal);
                }
            }
        });
    }

    public static WorkResult visit(CopyAction visitor, final FileCopyDetailsInternal... details) {
        return visit(visitor, Arrays.asList(details));
    }