https://www.graalvm.org/ 
interface com.oracle.svm.tutorial.CInterfaceTutorial$D1 extends org.graalvm.word.PointerBase
  minor version: 0
  major version: 59
  flags: flags: (0x0600) ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.svm.tutorial.CInterfaceTutorial$D1
  super_class: java.lang.Object
{
  public abstract int getIntValue();
    descriptor: ()I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CField(value = "int_value")

  public abstract org.graalvm.nativeimage.c.type.CIntPointer getValuePointer();
    descriptor: ()Lorg/graalvm/nativeimage/c/type/CIntPointer;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CFieldAddress(value = "int_value")

  public abstract org.graalvm.nativeimage.c.type.CIntPointer getIntPointer();
    descriptor: ()Lorg/graalvm/nativeimage/c/type/CIntPointer;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CField(value = "int_pointer")
}
SourceFile: "CInterfaceTutorial.java"
NestHost: com.oracle.svm.tutorial.CInterfaceTutorial
InnerClasses:
  abstract D1 = com.oracle.svm.tutorial.CInterfaceTutorial$D1 of com.oracle.svm.tutorial.CInterfaceTutorial
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CStruct(value = "d1_t")