https://www.graalvm.org/ 
interface com.oracle.svm.tutorial.CInterfaceTutorial$SUData extends org.graalvm.word.PointerBase
  minor version: 0
  major version: 59
  flags: flags: (0x0600) ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.svm.tutorial.CInterfaceTutorial$SUData
  super_class: java.lang.Object
{
  public abstract byte getUB1();
    descriptor: ()B
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CField(value = "f_ub1")

  public abstract org.graalvm.word.UnsignedWord getUB1Unsigned();
    descriptor: ()Lorg/graalvm/word/UnsignedWord;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.AllowWideningCast()
      org.graalvm.nativeimage.c.struct.CField(value = "f_ub1")

  public abstract byte getSB1();
    descriptor: ()B
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CField(value = "f_sb1")

  public abstract org.graalvm.word.SignedWord getSB1Signed();
    descriptor: ()Lorg/graalvm/word/SignedWord;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.AllowWideningCast()
      org.graalvm.nativeimage.c.struct.CField(value = "f_sb1")
}
SourceFile: "CInterfaceTutorial.java"
NestHost: com.oracle.svm.tutorial.CInterfaceTutorial
InnerClasses:
  abstract SUData = com.oracle.svm.tutorial.CInterfaceTutorial$SUData of com.oracle.svm.tutorial.CInterfaceTutorial
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.CStruct(value = "sudata_t")