我正在尝试运行ProGuard的gradlew -whyareyoukeeping class mypackage.MyClass，但是在Android Studio的终端中出现此错误：
Unknown command-line option '-y'.
USAGE: gradlew [option...] [task...]
-?, -h, --help Shows this help message.
-a, --no-rebuild Do not rebuild project dependencies.
-b, --build-file Specify the build file.
--build-cache Enables the Gradle build cache. Gradle will try to reuse outputs from previous builds.
-c, --settings-file Specify the settings file.
--configure-on-demand Configure necessary projects only. Gradle will attempt to reduce configuration time for large multi-project builds. [incubating]
--console Specifies which type of console output to generate. Values are 'plain', 'auto' (default), 'rich' or 'verbose'.
--continue Continue task execution after a task failure.
-D, --system-prop Set system property of the JVM (e.g. -Dmyprop=myvalue).
-d, --debug Log in debug mode (includes normal stacktrace).
--daemon Uses the Gradle Daemon to run the build. Starts the Daemon if not running.
...
可能相关的信息：我正在Windows机器上运行命令。