import org.gradle.internal.service.scopes.ServiceScope;

import javax.annotation.Nullable;
import java.io.File;
import java.util.Collection;

@ServiceScope({ Scope.Build.class, Scope.Global.class })
public interface ToolchainConfiguration {
    String AUTO_DETECT = "org.gradle.java.installations.auto-detect";

    Collection<String> getJavaInstallationsFromEnvironment();
    void setJavaInstallationsFromEnvironment(Collection<String> installations);

import java.util.Set;

public class AsdfInstallationSupplier implements InstallationSupplier {
    private final ToolchainConfiguration toolchainConfiguration;

    @Inject
    public AsdfInstallationSupplier(ToolchainConfiguration toolchainConfiguration) {
        this.toolchainConfiguration = toolchainConfiguration;
    }

    @Override
    public String getSourceName() {
        return "asdf-vm";
    }

    @Override

import java.util.Set;

public class JabbaInstallationSupplier implements InstallationSupplier {
    private final ToolchainConfiguration toolchainConfiguration;

    @Inject
    public JabbaInstallationSupplier(ToolchainConfiguration toolchainConfiguration) {
        this.toolchainConfiguration = toolchainConfiguration;
    }

    @Override
    public String getSourceName() {
        return "Jabba";
    }

    @Override

import org.gradle.jvm.toolchain.internal.ToolchainConfiguration;

import java.io.File;
import java.util.Arrays;
import java.util.List;

public class ToolchainBuildOptions extends BuildOptionSet<ToolchainConfiguration> {
    private final List<? extends BuildOption<? super ToolchainConfiguration>> options = Arrays.asList(
        new JavaInstallationPathsOption(),

        this.toolchainConfiguration = toolchainConfiguration;
    }

    public void configure(ServiceRegistration registration) {
        registration.add(ToolchainConfiguration.class, toolchainConfiguration);
        registration.add(DefaultOsXJavaHomeCommand.class);

        // NOTE: These need to be kept in sync with ToolchainsJvmServices
        registration.add(AsdfInstallationSupplier.class);

import java.util.Set;

public class IntellijInstallationSupplier implements InstallationSupplier {
    private final ToolchainConfiguration toolchainConfiguration;

    @Inject
    public IntellijInstallationSupplier(ToolchainConfiguration toolchainConfiguration) {
        this.toolchainConfiguration = toolchainConfiguration;
    }

    @Override
    public String getSourceName() {
        return "IntelliJ";
    }

import java.util.Set;

public class SdkmanInstallationSupplier implements InstallationSupplier {
    private final ToolchainConfiguration toolchainConfiguration;

    @Inject
    public SdkmanInstallationSupplier(ToolchainConfiguration toolchainConfiguration) {
        this.toolchainConfiguration = toolchainConfiguration;
    }

    @Override
    public String getSourceName() {
        return "SDKMAN!";
    }

    @Override

    def toolchainConfiguration = Mock(ToolchainConfiguration)
    TestFile candidates

    @Subject
    def supplier = new SdkmanInstallationSupplier(toolchainConfiguration)

    def setup() {
        candidates = temporaryFolder.createDir("candidates")
        toolchainConfiguration.getSdkmanCandidatesDirectory() >> candidates

    }

    ) {
        this(toolchainConfiguration, builtInSuppliers(toolchainConfiguration, fileResolver, jdkCacheDirectory), suppliers, metadataDetector, logger, buildOperationRunner, os, progressLoggerFactory, problemReporter);
    }

    @VisibleForTesting
    protected DefaultJavaInstallationRegistry(
        ToolchainConfiguration toolchainConfiguration,
        List<InstallationSupplier> suppliers,

        private final StyledTextOutputFactory outputFactory
        private final ToolchainConfiguration toolchainConfiguration

        @Inject
        TestShowToolchainsTask(JavaInstallationRegistry installationRegistry, StyledTextOutputFactory outputFactory, ToolchainConfiguration toolchainConfiguration) {
            this.toolchainConfiguration = toolchainConfiguration
            this.installationRegistry = installationRegistry