*/
    @Override
    public final void visitStructure(FileCollectionStructureVisitor visitor) {
        if (visitor.startVisit(OTHER, this)) {
            visitContents(visitor);
        }
    }

    protected void visitContents(FileCollectionStructureVisitor visitor) {
        visitor.visitCollection(OTHER, this);
    }

        when:
        e.accept(visitor)

        then:
        1 * visitor.visitCause(cause)
        1 * visitor.endVisiting()

        3 * visitor.startChildren()
        1 * visitor.node(childCause1)
        1 * visitor.node(childCause4)
        1 * visitor.node(childCause3)
        1 * visitor.node(childCause2)
        3 * visitor.endChildren()
        0 * visitor._

        and:

        1 * visitor.onEndHtmlElement('p')
        1 * visitor.onEnd()
        0 * visitor._
    }

    def discardsHtmlComments() {
        when:
        lexer.pushText("<p><!-- ignore me --></p>text <!-- -->2")
        lexer.visit(visitor)

        then:
        1 * visitor.onStartHtmlElement('p')
        1 * visitor.onStartHtmlElementComplete('p')
        1 * visitor.onEndHtmlElement('p')

            builder.add(processValue(element, visitor));
        }
        return visitor.set(builder.build());
    }

    private <T> T processList(List<?> value, ValueVisitor<T> visitor) {
        if (value.isEmpty()) {
            return visitor.emptyList();
        }
        return visitor.list(processListElements(value, visitor));
    }

        def visitor = Mock(TaskDependencyResolveContext)
        def set1 = of([artifact1, artifact2])
        def set2 = of([artifact1])

        when:
        set1.artifacts.visitDependencies(visitor)

        then:
        1 * visitor.add(artifact1)
        1 * visitor.add(artifact2)
        0 * visitor._

        when:
        set2.artifacts.visitDependencies(visitor)

        then:

            protected void visitChildren(Consumer<FileCollectionInternal> visitor) {
                visitor.accept(child1)
                visitor.accept(child2)
            }
        }
        def visitor = Mock(FileCollectionStructureVisitor)

        when:
        collection.visitStructure(visitor)

        then:
        1 * visitor.startVisit(FileCollectionInternal.OTHER, collection) >> true

        buildOpResult.visitInputFileProperties(visitor)

        then:
        1 * visitor.preProperty(_)
        1 * visitor.preRoot(_)

        and:
        1 * visitor.preDirectory { it.path == '/foo' }

        and:
        1 * visitor.file() { it.path == '/foo/one.txt' }

        and:
        1 * visitor.preDirectory { it.path == '/foo/sub' }

        and:
        1 * visitor.file() { it.path == '/foo/sub/two.txt' }

// Visitor is called with each object name, and returns true if visiting should continue
type Visitor func(name string) (shouldContinue bool)

func skipEmptyNames(visitor Visitor) Visitor {
	return func(name string) bool {
		if len(name) == 0 {
			// continue visiting
			return true
		}
		// delegate to visitor
		return visitor(name)
	}
}

        public VisitorImpl(TokenVisitor visitor) {
            this.visitor = visitor;
        }

        private void unwindTo(String element, TokenVisitor visitor) {
            if (elementStack.contains(element)) {
                while (!elementStack.getFirst().equals(element)) {
                    visitor.onEndHtmlElement(elementStack.removeFirst());
                }
                elementStack.removeFirst();

        1 * visitor.visitText('<')
        1 * visitor.visitType('OtherType')
        1 * visitor.visitText('>')
        0 * visitor._
    }

    def visitsSignatureForWildcardType() {
        TypeMetaData.SignatureVisitor visitor = Mock()
        type.setWildcard()

        when:
        type.visitSignature(visitor)

        then:
        1 * visitor.visitText('?')
        0 * visitor._
    }