@Test
    void testModelAndFactory() {
        MavenSession session = mock(MavenSession.class);
        List<ToolchainModel> toolchainModels = List.of(
                ToolchainModel.newBuilder().type("basic").build(),
                ToolchainModel.newBuilder().type("basic").build(),
                ToolchainModel.newBuilder().type("rare").build());
        Session sessionv4 = mock(Session.class);

import org.apache.maven.toolchain.RequirementMatcherFactory;
import org.apache.maven.toolchain.ToolchainFactory;
import org.apache.maven.toolchain.ToolchainPrivate;
import org.apache.maven.toolchain.model.ToolchainModel;
import org.codehaus.plexus.util.xml.Xpp3Dom;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * JDK toolchain factory.
 * This is a <code>ToolchainFactory</code> Plexus component registered with

                public org.apache.maven.api.Toolchain createToolchain(
                        @Nonnull org.apache.maven.api.toolchain.ToolchainModel model) throws ToolchainFactoryException {
                    try {
                        return getToolchainV4(v3Factory.createToolchain(new ToolchainModel(model)));
                    } catch (MisconfiguredToolchainException e) {
                        throw new RuntimeException(e);

package org.apache.maven.toolchain.java;

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

import org.apache.maven.toolchain.DefaultToolchain;
import org.apache.maven.toolchain.model.ToolchainModel;
import org.apache.maven.utils.Os;
import org.slf4j.Logger;

/**
 * JDK toolchain implementation.
 *
 * @since 2.0.9, renamed from DefaultJavaToolChain in 3.2.4

        <field>
          <name>toolchains</name>
          <version>1.0.0+</version>
          <description>The toolchain instance definition.</description>
          <association xml.itemsStyle="flat">
            <type>ToolchainModel</type>
            <multiplicity>*</multiplicity>
          </association>
        </field>
      </fields>
      <codeSegments>
        <codeSegment>
          <version>1.0.0/1.1.0</version>

import org.apache.maven.api.services.DependencyCoordinatesFactory;
import org.apache.maven.api.services.VersionResolverException;
import org.apache.maven.api.settings.Settings;
import org.apache.maven.api.toolchain.ToolchainModel;

/**
 * The session to install / deploy / resolve artifacts and dependencies.
 *
 * @since 4.0.0
 */
@Experimental
@ThreadSafe
public interface Session extends ProtoSession {

    /**