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".

  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

            rm -r "maven-local/$MAVEN_DIR"
          else
            tar xzf maven-dist/apache-maven-*-bin.tar.gz -C maven-local --strip-components 1
          fi
          echo "MAVEN_HOME=$PWD/maven-local" >> $GITHUB_ENV
          echo "$PWD/maven-local/bin" >> $GITHUB_PATH

      - name: Build with downloaded Maven
        shell: bash
        run: mvn verify -Papache-release -Dgpg.skip=true -e -B -V

        // 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 {

 */
public final class Constants {

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

    /**
     * Maven version.
     *
     * @since 3.0.0
     */
    @Config(readOnly = true, source = Config.Source.SYSTEM_PROPERTIES)

    }

    protected void pushCoreProperties(C context) throws Exception {
        System.setProperty(
                Constants.MAVEN_HOME,
                context.invokerRequest.installationDirectory().toString());
    }

    /**
     * Note: this method is called twice from {@link #doInvoke(LookupContext)} and modifies context. First invocation