assertEquals(1, result.getEffectiveToolchains().getToolchains().size());
        assertEquals(
                "TYPE", result.getEffectiveToolchains().getToolchains().get(0).getType());
        assertEquals(
                "user_value",
                result.getEffectiveToolchains()
                        .getToolchains()
                        .get(0)
                        .getProvides()

     * @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
     */
    Map<String, List<ToolchainModel>> getToolchains();

    /**
     * @since 3.3.0
     * @deprecated use {@link #setRootDirectory(Path)} instead

        return builderId;
    }

    @Override
    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;