text: @REM ----------------------------------------------------------------------------
  @REM Licensed to the Apache Software Foundation (ASF) under one
  @REM or more contributor license agreements.  See the NOTICE file
  @REM distributed with this work for additional information
  @REM regarding copyright ownership.  The ASF licenses this file
  @REM to you under the Apache License, Version 2.0 (the
  @REM "License"); you may not use this file except in compliance
  @REM with the License.  You may obtain a copy of the License at
  @REM
  @REM    https://www.apache.org/licenses/LICENSE-2.0
  @REM
  @REM Unless required by applicable law or agreed to in writing,
  @REM software distributed under the License is distributed on an
  @REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  @REM KIND, either express or implied.  See the License for the
  @REM specific language governing permissions and limitations
  @REM under the License.
  @REM ----------------------------------------------------------------------------
  
  @REM ----------------------------------------------------------------------------
  @REM Maven2 Start Up Batch script
  @REM
  @REM Required ENV vars:
  @REM JAVA_HOME - location of a JDK home dir
  @REM
  @REM Optional ENV vars
  @REM M2_HOME - location of maven2's installed home dir
  @REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
  @REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending
  @REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
  @REM     e.g. to debug Maven itself, use
  @REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
  @REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
  @REM ----------------------------------------------------------------------------
  
  @REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
  @echo off
  @REM set title of command window
  title %0
  @REM enable echoing my setting MAVEN_BATCH_ECHO to 'on'
  @if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
  
  @REM set %HOME% to equivalent of $HOME
  if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
  
  @REM Execute a user defined script before this one
  if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
  @REM check for pre script, once with legacy .bat ending and once with .cmd ending
  if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
  if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
  :skipRcPre
  
  @setlocal
  
  set ERROR_CODE=0
  
  @REM To isolate internal variables from possible post scripts, we use another setlocal
  @setlocal
  
  @REM ==== START VALIDATION ====
  if not "%JAVA_HOME%" == "" goto OkJHome
  
  echo.
  echo Error: JAVA_HOME not found in your environment. >&2
  echo Please set the JAVA_HOME variable in your environment to match the >&2
  echo location of your Java installation. >&2
  echo.
  goto error
  
  :OkJHome
  if exist "%JAVA_HOME%\bin\java.exe" goto init
  
  echo.
  echo Error: JAVA_HOME is set to an invalid directory. >&2
  echo JAVA_HOME = "%JAVA_HOME%" >&2
  echo Please set the JAVA_HOME variable in your environment to match the >&2
  echo location of your Java installation. >&2
  echo.
  goto error
  
  @REM ==== END VALIDATION ====
  
  :init
  
  @REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
  @REM Fallback to current working directory if not found.
  
  set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
  IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
  
  set EXEC_DIR=%CD%
  set WDIR=%EXEC_DIR%
  :findBaseDir
  IF EXIST "%WDIR%"\.mvn goto baseDirFound
  cd ..
  IF "%WDIR%"=="%CD%" goto baseDirNotFound
  set WDIR=%CD%
  goto findBaseDir
  
  :baseDirFound
  set MAVEN_PROJECTBASEDIR=%WDIR%
  cd "%EXEC_DIR%"
  goto endDetectBaseDir
  
  :baseDirNotFound
  set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
  cd "%EXEC_DIR%"
  
  :endDetectBaseDir
  
  IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
  
  @setlocal EnableExtensions EnableDelayedExpansion
  for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
  @endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
  
  :endReadAdditionalConfig
  
  SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
  set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
  set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
  
  set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.4.2/maven-wrapper-0.4.2.jar"
  FOR /F "tokens=1,2 delims==" %%A IN (%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties) DO (
  	IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B 
  )
  
  @REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
  @REM This allows using the maven wrapper in projects that prohibit checking in binary data.
  if exist %WRAPPER_JAR% (
      echo Found %WRAPPER_JAR%
  ) else (
      echo Couldn't find %WRAPPER_JAR%, downloading it ...
  	echo Downloading from: %DOWNLOAD_URL%
      powershell -Command "(New-Object Net.WebClient).DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"
      echo Finished downloading %WRAPPER_JAR%
  )
  @REM End of extension
  
  %MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
  if ERRORLEVEL 1 goto error
  goto end
  
  :error
  set ERROR_CODE=1
  
  :end
  @endlocal & set ERROR_CODE=%ERROR_CODE%
  
  if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
  @REM check for post script, once with legacy .bat ending and once with .cmd ending
  if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
  if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
  :skipRcPost
  
  @REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
  if "%MAVEN_BATCH_PAUSE%" == "on" pause
  
  if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
  
  exit /B %ERROR_CODE%
  