An unhandled exception was thrown by the Error Prone static analysis plugin.

```
Please report this at https://github.com/google/error-prone/issues/new and include the following:
[ERROR]
[ERROR] error-prone version: 2.20.0
[ERROR] BugPattern: UnusedTypeParameter
[ERROR] Stack Trace:
[ERROR] java.util.NoSuchElementException: No value present
[ERROR] at java.base/java.util.Optional.get(Optional.java:148)
[ERROR] at com.google.errorprone.bugpatterns.UnusedTypeParameter.removeTypeParameter(UnusedTypeParameter.java:119)
[ERROR] at com.google.errorprone.bugpatterns.UnusedTypeParameter$1.handle(UnusedTypeParameter.java:79)
[ERROR] at com.google.errorprone.bugpatterns.UnusedTypeParameter$1.visitMethod(UnusedTypeParameter.java:69)
[ERROR] at com.google.errorprone.bugpatterns.UnusedTypeParameter$1.visitMethod(UnusedTypeParameter.java:53)
[ERROR] at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:898)
[ERROR] at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
[ERROR] at com.google.errorprone.bugpatterns.BugChecker$SuppressibleTreePathScanner.scan(BugChecker.java:570)
[ERROR] at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:90)
[ERROR] at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
[ERROR] at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113)
[ERROR] at jdk.compiler/com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:187)
[ERROR] at com.google.errorprone.bugpatterns.UnusedTypeParameter$1.visitClass(UnusedTypeParameter.java:59)
[ERROR] at com.google.errorprone.bugpatterns.UnusedTypeParameter$1.visitClass(UnusedTypeParameter.java:53)
[ERROR] at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:808)
[ERROR] at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
[ERROR] at com.google.errorprone.bugpatterns.BugChecker$SuppressibleTreePathScanner.scan(BugChecker.java:570)
[ERROR] at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:105)
[ERROR] at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:113)
[ERROR] at jdk.compiler/com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:144)
[ERROR] at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:591)
[ERROR] at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:56)
[ERROR] at com.google.errorprone.bugpatterns.BugChecker$SuppressibleTreePathScanner.scan(BugChecker.java:575)
[ERROR] at com.google.errorprone.bugpatterns.UnusedTypeParameter.matchCompilationUnit(UnusedTypeParameter.java:83)
[ERROR] at com.google.errorprone.scanner.ErrorProneScanner.processMatchers(ErrorProneScanner.java:449)
[ERROR] at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:555)
[ERROR] at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:150)
[ERROR] at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:591)
[ERROR] at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:56)
[ERROR] at com.google.errorprone.scanner.Scanner.scan(Scanner.java:58)
[ERROR] at com.google.errorprone.scanner.ErrorProneScannerTransformer.apply(ErrorProneScannerTransformer.java:43)
[ERROR] at com.google.errorprone.ErrorProneAnalyzer.finished(ErrorProneAnalyzer.java:156)
[ERROR] at jdk.compiler/com.sun.tools.javac.api.MultiTaskListener.finished(MultiTaskListener.java:132)
[ERROR] at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1418)
[ERROR] at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1365)
[ERROR] at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:960)
[ERROR] at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:104)
[ERROR] at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.handleExceptions(JavacTaskImpl.java:147)
[ERROR] at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:100)
[ERROR] at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:94)
[ERROR] at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:136)
[ERROR] at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:183)
[ERROR] at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1140)
[ERROR] at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:193)
[ERROR] at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
[ERROR] at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
[ERROR] at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
[ERROR] at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
[ERROR] at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
[ERROR] at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)
[ERROR] at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)
[ERROR] at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)
[ERROR] at org.apache.maven.cli.MavenCli.execute(MavenCli.java:972)
[ERROR] at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:293)
[ERROR] at org.apache.maven.cli.MavenCli.main(MavenCli.java:196)
[ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[ERROR] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ERROR] at java.base/java.lang.reflect.Method.invoke(Method.java:566)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:282)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:225)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:406)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:347)
```

Using:

```
2.20.0
1.18.24
11
11
```

Pom Snippet:

```

org.apache.maven.plugins
maven-compiler-plugin
3.11.0

${maven.compiler.source}
${maven.compiler.target}

true

false


-J--add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED
-J--add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED
-J--add-exports=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED
-J--add-exports=jdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED
-J--add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED
-J--add-exports=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED
-J--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED
-J--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED
-J--add-opens=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED
-J--add-open=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED
-XDcompilePolicy=simple


-Xplugin:ErrorProne
-XepDisableWarningsInGeneratedCode
-XepExcludedPaths:.*/generated-sources/.*




com.google.errorprone
error_prone_core
${error-prone.version}


org.projectlombok
lombok
${lombok.version}





```