https://github.com/oracle/graal: GraalVM is an ecosystem for compiling and running applications written in multiple languages. GraalVM removes the isolation between programming languages and enables interoperability in a shared runtime. 
public interface org.graalvm.nativeimage.hosted.Feature$DuringSetupAccess extends org.graalvm.nativeimage.hosted.Feature$FeatureAccess
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.graalvm.nativeimage.hosted.Feature$DuringSetupAccess
  super_class: java.lang.Object
{
  public abstract void registerObjectReplacer(java.util.function.Function<java.lang.Object, java.lang.Object>);
    descriptor: (Ljava/util/function/Function;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (Ljava/util/function/Function<Ljava/lang/Object;Ljava/lang/Object;>;)V
    MethodParameters:
          Name  Flags
      replacer  
}
SourceFile: "Feature.java"
NestHost: org.graalvm.nativeimage.hosted.Feature
InnerClasses:
  public abstract DuringSetupAccess = org.graalvm.nativeimage.hosted.Feature$DuringSetupAccess of org.graalvm.nativeimage.hosted.Feature
  public abstract FeatureAccess = org.graalvm.nativeimage.hosted.Feature$FeatureAccess of org.graalvm.nativeimage.hosted.Feature
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.Platforms(value = {Lorg/graalvm/nativeimage/Platform$HOSTED_ONLY;})