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.c.function.CFunction 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.graalvm.nativeimage.c.function.CFunction
  super_class: java.lang.Object
{
  public abstract java.lang.String value();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    AnnotationDefault: ""

  public abstract org.graalvm.nativeimage.c.function.CFunction$Transition transition();
    descriptor: ()Lorg/graalvm/nativeimage/c/function/CFunction$Transition;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    AnnotationDefault: org.graalvm.nativeimage.c.function.CFunction$Transition.TO_NATIVE:Lorg/graalvm/nativeimage/c/function/CFunction$Transition;
}
SourceFile: "CFunction.java"
NestMembers:
  org.graalvm.nativeimage.c.function.CFunction$Transition
InnerClasses:
  public final Transition = org.graalvm.nativeimage.c.function.CFunction$Transition of org.graalvm.nativeimage.c.function.CFunction
    RuntimeVisibleAnnotations: 
      java.lang.annotation.Retention(value = java.lang.annotation.RetentionPolicy.RUNTIME:Ljava/lang/annotation/RetentionPolicy;)
      java.lang.annotation.Target(value = {java.lang.annotation.ElementType.METHOD:Ljava/lang/annotation/ElementType;})