return this;
        }

        public Builder cwd(Path cwd) {
            this.cwd = cwd;
            return this;
        }

        public Builder mavenHome(Path mavenHome) {
            this.mavenHome = mavenHome;
            return this;
        }

        public Builder userHome(Path userHome) {
            this.userHome = userHome;
            return this;
        }

        Path result;
        if (context.parserRequest.mavenHome() != null) {
            result = getCanonicalPath(context.parserRequest.mavenHome());
            context.systemPropertiesOverrides.put(MAVEN_HOME, result.toString());
        } else {
            String mavenHome = System.getProperty(Constants.MAVEN_HOME);
            if (mavenHome == null) {

class MavenPropertiesLoaderTest {

    @Test
    void testIncludes() throws Exception {
        FileSystem fs = Jimfs.newFileSystem(Configuration.unix());

        Path mavenHome = fs.getPath("/maven");
        Files.createDirectories(mavenHome);
        Path mavenConf = mavenHome.resolve("conf");
        Files.createDirectories(mavenConf);
        Path mavenUserProps = mavenConf.resolve("maven.properties");

    @Test
    public void testPropertiesInterpolation() throws Exception {
        FileSystem fs = Jimfs.newFileSystem(Configuration.windows());

        Path mavenHome = fs.getPath("C:\\maven");
        Files.createDirectories(mavenHome);
        Path mavenConf = mavenHome.resolve("conf");
        Files.createDirectories(mavenConf);
        Path mavenUserProps = mavenConf.resolve("maven.properties");

        // Windows paths.
        //
        String mavenHome = System.getProperty(Constants.MAVEN_HOME);

        if (mavenHome != null) {
            System.setProperty(
                    Constants.MAVEN_HOME,
                    getCanonicalPath(fileSystem.getPath(mavenHome)).toString());
        }
    }

    void cli(CliRequest cliRequest) throws Exception {
        //

  if expr "$link" : '/.*' > /dev/null; then
    PRG="$link"
  else
    PRG="`dirname "$PRG"`/$link"
  fi
done

saveddir=`pwd`

MAVEN_HOME=`dirname "$PRG"`/..

# make it fully qualified
MAVEN_HOME=`cd "$MAVEN_HOME" && pwd`

cd "$saveddir"

CLASSWORLDS_CONF="$MAVEN_HOME/bin/m2.conf"

# For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
if $cygwin || $mingw ; then

  goto error
)
:chkMHome
set "MAVEN_HOME=%~dp0"
set "MAVEN_HOME=%MAVEN_HOME:~0,-5%"
if "%MAVEN_HOME%"=="" goto error

:checkMCmd
if not exist "%MAVEN_HOME%\bin\mvn.cmd" goto error

@REM ==== END VALIDATION ====

:init

set "CLASSWORLDS_CONF=%MAVEN_HOME%\bin\m2.conf"

@REM Find the project basedir, i.e., the directory that contains the directory ".mvn".

            Path mavenSystemHome = properties.containsKey("maven.home")
                    ? Paths.get(properties.get("maven.home"))
                    : properties.containsKey("env.MAVEN_HOME") ? Paths.get(properties.get("env.MAVEN_HOME")) : null;

            DefaultRepositorySystemSession rsession = new DefaultRepositorySystemSession(h -> false);
            rsession.setSystemProperties(properties);

/**
 * Configuration constants.
 */
public final class Constants {

    /**
     * Maven home.
     *
     * @since 3.0.0
     */
    @Config(readOnly = true)
    public static final String MAVEN_HOME = "maven.home";

    /**
     * Maven installation configuration directory.
     *
     * @since 4.0.0
     */
    @Config(defaultValue = "${maven.home}/conf")

                .filter(k -> !sys.contains(k.getKey()))
                .forEach(k -> System.setProperty(k.getKey(), k.getValue()));
        System.setProperty(
                Constants.MAVEN_HOME, invokerRequest.installationDirectory().toString());
    }

    protected void validate(C context) throws Exception {}

    protected void prepare(C context) throws Exception {}