如何在micronaut中创建自定义注释？

import io.micronaut.core.annotation.AnnotationValue;
import io.micronaut.core.annotation.Introspected;
import io.micronaut.inject.annotation.AbstractAnnotationMetadataBuilder;
import io.micronaut.inject.annotation.AnnotationMetadataReference;
import io.micronaut.inject.annotation.AnnotationMetadataResolver;
import io.micronaut.inject.annotation.AnnotationMetadataScanner;
import io.micronaut.inject.annotation.NamedAnnotationTransformer;
import io.micronaut.inject.annotation.TypeAnnotationTransformer;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.lang.annotation.*;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.function.Consumer;

@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE})
@Introspected
public @interface CustomAnnotation {
    // 定义注解属性
    String value() default "";
}

import io.micronaut.context.annotation.Primary;
import io.micronaut.core.annotation.AnnotationMetadata;
import io.micronaut.inject.ast.ClassElement;
import io.micronaut.inject.visitor.ClassElementVisitor;
import io.micronaut.inject.visitor.TypeElementVisitor;

@Primary
public class CustomAnnotationTransformer implements TypeAnnotationTransformer<CustomAnnotation> {
    @Override
    public void transform(AnnotationMetadata annotationMetadata, ClassElement element) {
        // 处理自定义注解逻辑
        String value = annotationMetadata.stringValue(CustomAnnotation.class).orElse("");
        System.out.println("CustomAnnotation value: " + value);
    }
}

micronaut:
  processing:
    visitors:
      CustomAnnotation:
        class: com.example.CustomAnnotationTransformer

@CustomAnnotation("Hello, Micronaut!")
public class MyClass {
    // ...
}