https://www.graalvm.org/ 
public interface com.oracle.svm.core.genscavenge.AlignedHeapChunk$AlignedHeader extends com.oracle.svm.core.genscavenge.HeapChunk$Header<com.oracle.svm.core.genscavenge.AlignedHeapChunk$AlignedHeader>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.svm.core.genscavenge.AlignedHeapChunk$AlignedHeader
  super_class: java.lang.Object
{
}
Signature: Ljava/lang/Object;Lcom/oracle/svm/core/genscavenge/HeapChunk$Header<Lcom/oracle/svm/core/genscavenge/AlignedHeapChunk$AlignedHeader;>;
SourceFile: "AlignedHeapChunk.java"
NestHost: com.oracle.svm.core.genscavenge.AlignedHeapChunk
InnerClasses:
  public abstract AlignedHeader = com.oracle.svm.core.genscavenge.AlignedHeapChunk$AlignedHeader of com.oracle.svm.core.genscavenge.AlignedHeapChunk
  public abstract Header = com.oracle.svm.core.genscavenge.HeapChunk$Header of com.oracle.svm.core.genscavenge.HeapChunk
    RuntimeVisibleAnnotations: 
      org.graalvm.nativeimage.c.struct.RawStructure()