https://openjdk.java.net/ 
public interface java.util.concurrent.Delayed extends java.lang.Comparable<java.util.concurrent.Delayed>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: java.util.concurrent.Delayed
  super_class: java.lang.Object
{
  public abstract long getDelay(java.util.concurrent.TimeUnit);
    descriptor: (Ljava/util/concurrent/TimeUnit;)J
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      unit  
}
Signature: Ljava/lang/Object;Ljava/lang/Comparable<Ljava/util/concurrent/Delayed;>;
SourceFile: "Delayed.java"