org.apache.maven.api.Toolchain rareToolchain = mock(org.apache.maven.api.Toolchain.class);
        when(toolchainFactoryRareType.createToolchain(any())).thenReturn(rareToolchain);

        List<Toolchain> toolchains = toolchainManager.getToolchains(session, "rare", null);

        assertEquals(1, toolchains.size());
    }

    @Test
    void testModelsAndFactory() {

          <artifactId>toolchains-maven-plugin</artifactId>
          <version>${toolchains-maven-plugin.version}</version>
          <executions>
            <!--
            We can apparently have only one <jdk> per execution: Others are silently ignored :(
            To properly test this, you need to remove existing toolchains:
            rm -rf ~/.m2/jdks/ ~/.m2/toolchains.xml

          <artifactId>toolchains-maven-plugin</artifactId>
          <version>${toolchains-maven-plugin.version}</version>
          <executions>
            <!--
            We can apparently have only one <jdk> per execution: Others are silently ignored :(
            To properly test this, you need to remove existing toolchains:
            rm -rf ~/.m2/jdks/ ~/.m2/toolchains.xml

import org.apache.maven.impl.DefaultToolchainsXmlFactory;
import org.apache.maven.toolchain.io.DefaultToolchainsReader;
import org.apache.maven.toolchain.io.DefaultToolchainsWriter;
import org.apache.maven.toolchain.io.ToolchainsParseException;
import org.apache.maven.toolchain.model.PersistedToolchains;
import org.apache.maven.toolchain.model.ToolchainModel;
import org.codehaus.plexus.interpolation.os.OperatingSystemUtils;

                .longOpt("toolchains")
                .desc("Alternate path for the user toolchains file")
                .hasArg()
                .build());
        options.addOption(Option.builder(ALTERNATE_INSTALLATION_TOOLCHAINS)
                .longOpt("install-toolchains")
                .desc("Alternate path for the installation toolchains file")
                .hasArg()
                .build());

    public Map<String, List<ToolchainModel>> getToolchains() {
        if (toolchains == null) {
            toolchains = new HashMap<>();
        }
        return toolchains;
    }

    @Override
    public MavenExecutionRequest setToolchains(Map<String, List<ToolchainModel>> toolchains) {
        this.toolchains = toolchains;
        return this;
    }

    @Deprecated
    @Override

     * @since 3.2.0
     */
    String getBuilderId();

    /**
     *
     * @param toolchains all toolchains grouped by type
     * @return this request
     * @since 3.3.0
     */
    MavenExecutionRequest setToolchains(Map<String, List<ToolchainModel>> toolchains);

    /**
     *
     * @return all toolchains grouped by type, never {@code null}
     * @since 3.3.0
     */

                    .longOpt("toolchains")
                    .desc("Alternate path for the user toolchains file")
                    .hasArg()
                    .get());
            options.addOption(Option.builder(ALTERNATE_INSTALLATION_TOOLCHAINS)
                    .longOpt("install-toolchains")
                    .desc("Alternate path for the installation toolchains file")
                    .hasArg()

                .build();

        context.eventSpyDispatcher.onEvent(toolchainsRequest);

        context.logger.debug("Reading installation toolchains from '" + installationToolchainsFile + "'");
        context.logger.debug("Reading user toolchains from '" + userToolchainsFile + "'");

        ToolchainsBuilderResult toolchainsResult =

        <targetPath>META-INF</targetPath>
      </resource>
    </resources>
    <plugins>
      <plugin>
        <groupId>org.mvnsearch</groupId>
        <artifactId>toolchains-maven-plugin</artifactId>
      </plugin>
      <plugin>
        <artifactId>maven-toolchains-plugin</artifactId>
      </plugin>
      <plugin>
        <artifactId>maven-jar-plugin</artifactId>
        <configuration>
          <archive>