https://spring.io/projects/spring-boot: Spring Boot Actuator (Pivotal Software, Inc.) 
public interface org.springframework.boot.actuate.endpoint.web.annotation.EndpointWebExtension extends java.lang.annotation.Annotation
  minor version: 0
  major version: 59
  flags: flags: (0x2601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT, ACC_ANNOTATION
  this_class: org.springframework.boot.actuate.endpoint.web.annotation.EndpointWebExtension
  super_class: java.lang.Object
{
  public abstract java.lang.Class<?> endpoint();
    descriptor: ()Ljava/lang/Class;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: ()Ljava/lang/Class<*>;
    RuntimeVisibleAnnotations: 
      org.springframework.core.annotation.AliasFor(annotation = Lorg/springframework/boot/actuate/endpoint/annotation/EndpointExtension;)
}
SourceFile: "EndpointWebExtension.java"
    RuntimeVisibleAnnotations: 
      java.lang.annotation.Target(value = {java.lang.annotation.ElementType.TYPE:Ljava/lang/annotation/ElementType;})
      java.lang.annotation.Retention(value = java.lang.annotation.RetentionPolicy.RUNTIME:Ljava/lang/annotation/RetentionPolicy;)
      java.lang.annotation.Documented()
      org.springframework.boot.actuate.endpoint.annotation.EndpointExtension(filter = Lorg/springframework/boot/actuate/endpoint/web/annotation/WebEndpointFilter;)