private final List<FileSystemSnapshot> roots = new ArrayList<>();
        private boolean containsArchiveTrees;

        @Override
        public void visitCollection(FileCollectionInternal.Source source, Iterable<File> contents) {
            for (File file : contents) {
                roots.add(fileSystemAccess.read(file.getAbsolutePath()));
            }
        }

			}
			root, err := ParseCertificate(rootDER)
			if err != nil {
				t.Fatalf("failed to parse certificate: %s", err)
			}
			roots := NewCertPool()
			roots.AddCert(root)

			_, err = root.Verify(VerifyOptions{Roots: roots, KeyUsages: tc.verifyEKUs})
			if err == nil && !tc.succeed {
				t.Error("verification succeed")
			} else if err != nil && tc.succeed {

		},
		"secure, no roots": {
			TLSConfig:   &tls.Config{InsecureSkipVerify: false},
			ExpectError: "unknown authority|not trusted",
		},
		"secure with roots": {
			TLSConfig: &tls.Config{InsecureSkipVerify: false, RootCAs: roots},
		},
		"secure with mismatched server": {
			TLSConfig:   &tls.Config{InsecureSkipVerify: false, RootCAs: roots, ServerName: "bogus.com"},
			ExpectError: "not bogus.com",

var x509usefallbackroots = godebug.New("x509usefallbackroots")

// SetFallbackRoots sets the roots to use during certificate verification, if no
// custom roots are specified and a platform verifier or a system certificate
// pool is not available (for instance in a container which does not have a root
// certificate bundle). SetFallbackRoots will panic if roots is nil.
//
// SetFallbackRoots may only be called once, if called multiple times it will

				roots = append(roots, module.Version{Path: p, Version: v})
			}
		}
		gover.ModSort(roots)

		// First, we extend the graph so that it includes the selected version
		// of every root. The upgraded roots are in addition to the original
		// roots, so we will have enough information to trace a path to each
		// conflict we discover from one or more of the original roots.

            hash != null
            roots.size() == 1
            with(roots[0]) {
                path == file("a/build/libs/a.jar").absolutePath
                !containsKey("children")
            }
        }
        with(bCompileJava.stableSources) {
            hash != null
            roots.size() == 2
            with(roots[0]) {
                path == file("b/src/main/java").absolutePath

				nodes[lowest] = struct{}{}
			}
		}
	}

	// Sort roots by height. This makes the result deterministic
	// and also improves the error reporting.
	var roots []loader.Sym
	for k := range nodes {
		roots = append(roots, k)
	}
	sort.Slice(roots, func(i, j int) bool {
		h1, h2 := sc.height[roots[i]], sc.height[roots[j]]
		if h1 != h2 {
			return h1 > h2
		}
		// Secondary sort by Sym.

                    logOutputStream.close();
                }

                if (outputTree) {
                    List<BuildOperationRecord> roots = readLogToTreeRoots(logFile(basePath), false);
                    writeDetailTree(roots);
                    writeSummaryTree(roots);
                }
            } catch (IOException e) {
                throw UncheckedException.throwAsUncheckedException(e);
            }

    fun rootSpecOf(value: FileTreeInternal): List<FileTreeSpec> {
        val visitor = FileTreeVisitor()
        value.visitStructure(visitor)
        return visitor.roots
    }

    private
    inner class FileTreeVisitor : FileCollectionStructureVisitor {
        var roots = mutableListOf<FileTreeSpec>()

        override fun startVisit(source: FileCollectionInternal.Source, fileCollection: FileCollectionInternal): Boolean = when {

    List<BuildOperationRecord> getRoots() {
        operations.roots
    }

    @Override
    @SuppressWarnings("GrUnnecessaryPublicModifier")
    public <T extends BuildOperationType<?, ?>> BuildOperationRecord root(Class<T> type, Spec<? super BuildOperationRecord> predicate = Specs.satisfyAll()) {
        def detailsType = BuildOperationTypes.detailsType(type)
        def roots = operations.roots.findAll {