https://spring.io/projects/spring-boot: Spring Boot (Pivotal Software, Inc.) 
public interface org.springframework.boot.web.server.WebServerFactoryCustomizer<T extends org.springframework.boot.web.server.WebServerFactory>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.springframework.boot.web.server.WebServerFactoryCustomizer
  super_class: java.lang.Object
{
  public abstract void customize();
    descriptor: (Lorg/springframework/boot/web/server/WebServerFactory;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (TT;)V
    MethodParameters:
         Name  Flags
      factory  
}
Signature: <T::Lorg/springframework/boot/web/server/WebServerFactory;>Ljava/lang/Object;
SourceFile: "WebServerFactoryCustomizer.java"
    RuntimeVisibleAnnotations: 
      java.lang.FunctionalInterface()