Update Maven wrapper to 3.9.3.

Change-Id: Ib6603736b14853f7c340f7f0b766fd5b900088f6
diff --git a/mvnw.cmd b/mvnw.cmd
index 8611571..f80fbad 100644
--- a/mvnw.cmd
+++ b/mvnw.cmd
@@ -1,182 +1,205 @@
-@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    http://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 Maven 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 keystroke 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 by 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/0.5.6/maven-wrapper-0.5.6.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% (
-    if "%MVNW_VERBOSE%" == "true" (
-        echo Found %WRAPPER_JAR%
-    )
-) else (
-    if not "%MVNW_REPOURL%" == "" (
-        SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
-    )
-    if "%MVNW_VERBOSE%" == "true" (
-        echo Couldn't find %WRAPPER_JAR%, downloading it ...
-        echo Downloading from: %DOWNLOAD_URL%
-    )
-
-    powershell -Command "&{"^
-		"$webclient = new-object System.Net.WebClient;"^
-		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
-		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
-		"}"^
-		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
-		"}"
-    if "%MVNW_VERBOSE%" == "true" (
-        echo Finished downloading %WRAPPER_JAR%
-    )
-)
-@REM End of extension
-
-@REM Provide a "standardized" way to retrieve the CLI args that will
-@REM work with both Windows and non-Windows executions.
-set MAVEN_CMD_LINE_ARGS=%*
-
-%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%
+@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    http://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 Apache Maven Wrapper startup batch script, version 3.2.0

+@REM

+@REM Required ENV vars:

+@REM JAVA_HOME - location of a JDK home dir

+@REM

+@REM Optional ENV vars

+@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 keystroke 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 by 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 "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*

+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\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 WRAPPER_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar"

+

+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (

+    IF "%%A"=="wrapperUrl" SET WRAPPER_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% (

+    if "%MVNW_VERBOSE%" == "true" (

+        echo Found %WRAPPER_JAR%

+    )

+) else (

+    if not "%MVNW_REPOURL%" == "" (

+        SET WRAPPER_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar"

+    )

+    if "%MVNW_VERBOSE%" == "true" (

+        echo Couldn't find %WRAPPER_JAR%, downloading it ...

+        echo Downloading from: %WRAPPER_URL%

+    )

+

+    powershell -Command "&{"^

+		"$webclient = new-object System.Net.WebClient;"^

+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^

+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^

+		"}"^

+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%WRAPPER_URL%', '%WRAPPER_JAR%')"^

+		"}"

+    if "%MVNW_VERBOSE%" == "true" (

+        echo Finished downloading %WRAPPER_JAR%

+    )

+)

+@REM End of extension

+

+@REM If specified, validate the SHA-256 sum of the Maven wrapper jar file

+SET WRAPPER_SHA_256_SUM=""

+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (

+    IF "%%A"=="wrapperSha256Sum" SET WRAPPER_SHA_256_SUM=%%B

+)

+IF NOT %WRAPPER_SHA_256_SUM%=="" (

+    powershell -Command "&{"^

+       "$hash = (Get-FileHash \"%WRAPPER_JAR%\" -Algorithm SHA256).Hash.ToLower();"^

+       "If('%WRAPPER_SHA_256_SUM%' -ne $hash){"^

+       "  Write-Output 'Error: Failed to validate Maven wrapper SHA-256, your Maven wrapper might be compromised.';"^

+       "  Write-Output 'Investigate or delete %WRAPPER_JAR% to attempt a clean download.';"^

+       "  Write-Output 'If you updated your Maven version, you need to update the specified wrapperSha256Sum property.';"^

+       "  exit 1;"^

+       "}"^

+       "}"

+    if ERRORLEVEL 1 goto error

+)

+

+@REM Provide a "standardized" way to retrieve the CLI args that will

+@REM work with both Windows and non-Windows executions.

+set MAVEN_CMD_LINE_ARGS=%*

+

+%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 "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"

+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\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%

+

+cmd /C exit /B %ERROR_CODE%