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.impl.ThreadingSupport
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.graalvm.nativeimage.impl.ThreadingSupport
  super_class: java.lang.Object
{
  public abstract void registerRecurringCallback(long, java.util.concurrent.TimeUnit, org.graalvm.nativeimage.Threading$RecurringCallback);
    descriptor: (JLjava/util/concurrent/TimeUnit;Lorg/graalvm/nativeimage/Threading$RecurringCallback;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
          Name  Flags
      interval  
      unit      
      callback  
}
SourceFile: "ThreadingSupport.java"
InnerClasses:
  public abstract RecurringCallback = org.graalvm.nativeimage.Threading$RecurringCallback of org.graalvm.nativeimage.Threading