https://www.graalvm.org/ 
public interface com.oracle.svm.core.MemoryWalker$ImageHeapRegionVisitor
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.svm.core.MemoryWalker$ImageHeapRegionVisitor
  super_class: java.lang.Object
{
  public abstract <T> boolean visitNativeImageHeapRegion(T, com.oracle.svm.core.MemoryWalker$NativeImageHeapRegionAccess<T>);
    descriptor: (Ljava/lang/Object;Lcom/oracle/svm/core/MemoryWalker$NativeImageHeapRegionAccess;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: <T:Ljava/lang/Object;>(TT;Lcom/oracle/svm/core/MemoryWalker$NativeImageHeapRegionAccess<TT;>;)Z
    RuntimeVisibleAnnotations: 
      com.oracle.svm.core.annotate.RestrictHeapAccess(access = com.oracle.svm.core.annotate.RestrictHeapAccess$Access.NO_ALLOCATION:Lcom/oracle/svm/core/annotate/RestrictHeapAccess$Access;, reason = "Must not allocate while visiting memory.")
    MethodParameters:
        Name  Flags
      region  
      access  
}
SourceFile: "MemoryWalker.java"
NestHost: com.oracle.svm.core.MemoryWalker
InnerClasses:
  public abstract ImageHeapRegionVisitor = com.oracle.svm.core.MemoryWalker$ImageHeapRegionVisitor of com.oracle.svm.core.MemoryWalker
  public abstract NativeImageHeapRegionAccess = com.oracle.svm.core.MemoryWalker$NativeImageHeapRegionAccess of com.oracle.svm.core.MemoryWalker
  public final Access = com.oracle.svm.core.annotate.RestrictHeapAccess$Access of com.oracle.svm.core.annotate.RestrictHeapAccess