PersistedToolchains toolchains = null;

        if (userToolchainsFile != null && userToolchainsFile.isFile()) {
            try (InputStream in = Files.newInputStream(userToolchainsFile.toPath())) {
                toolchains = new PersistedToolchains(new MavenToolchainsStaxReader().read(in));
            } catch (Exception e) {
                throw new MisconfiguredToolchainException(

  public void testBuilderPutAll() {
    Map<String, Integer> toPut = new LinkedHashMap<>();
    toPut.put("one", 1);
    toPut.put("two", 2);
    toPut.put("three", 3);
    Map<String, Integer> moreToPut = new LinkedHashMap<>();
    moreToPut.put("four", 4);
    moreToPut.put("five", 5);

    ImmutableMap<String, Integer> map =
        new Builder<String, Integer>().putAll(toPut).putAll(moreToPut).buildOrThrow();

                    def outputDir = shortName.startsWith('gradle-') ? gradleJars : dependencies
                    def out = new File(outputDir, shortName)
                    Files.copy(zin, out.toPath())
                    zin.closeEntry()
                }
            }
        }
    }

            Path upgradedPropertiesJson = fs.getPath(UPGRADED_PROPERTIES_FILE);
            if (Files.exists(upgradedPropertiesJson)) {
                Files.copy(upgradedPropertiesJson, to.getAsFile().get().toPath(), StandardCopyOption.REPLACE_EXISTING);
            } else {
                to.getAsFile().get().delete();
            }
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }

import okhttp3.Cache
import okhttp3.Dns
import okhttp3.OkHttpClient
import okhttp3.Protocol
import okhttp3.testing.PlatformRule
import okio.Buffer
import okio.ByteString.Companion.decodeHex
import okio.Path.Companion.toPath
import okio.fakefilesystem.FakeFileSystem
import org.junit.jupiter.api.Assertions.fail
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Tag
import org.junit.jupiter.api.Test

                // to delete on exit
            }
        } else if (metadataFile.exists()) {
            try (InputStream input = Files.newInputStream(metadataFile.toPath())) {
                metadata = new Metadata(new MetadataStaxReader().read(input, false));
            }
        }

        boolean changed;

        // If file could not be found or was not valid, start from scratch

    public Metadata read(File input, Map<String, ?> options) throws IOException {
        Objects.requireNonNull(input, "input cannot be null");

        return read(Files.newInputStream(input.toPath()), options);
    }

    public Metadata read(Reader input, Map<String, ?> options) throws IOException {
        Objects.requireNonNull(input, "input cannot be null");

        try (Reader in = input) {

            metadata.setVersioning(recessive.getVersioning());
        }
    }

    @Deprecated
    @Override
    public MavenMetadata setFile(File file) {
        return new PluginsMetadata(pluginInfo, file.toPath(), timestamp);
    }

    @Override
    public MavenMetadata setPath(Path path) {
        return new PluginsMetadata(pluginInfo, path, timestamp);
    }

    @Override
    public String getGroupId() {

                .getFile()
                .getExists()
                .contains(BASE_DIR));
    }

    private static Model readPom(File file) throws Exception {
        try (InputStream is = Files.newInputStream(file.toPath())) {
            return new MavenStaxReader().read(is);
        }
    }

     *
     * @deprecated Use {@link #locateExistingPom(Path)} instead.
     */
    @Deprecated
    default File locateExistingPom(File project) {
        Path path = locateExistingPom(project != null ? project.toPath() : null);
        return path != null ? path.toFile() : null;
    }

    /**
     * Returns the file containing the pom or null if a pom can not be found at the given file or in the given directory.
     *