https://openjdk.java.net/ 
public interface javax.security.auth.Refreshable
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.security.auth.Refreshable
  super_class: java.lang.Object
{
  public abstract boolean isCurrent();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract void refresh();
    descriptor: ()V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws javax.security.auth.RefreshFailedException
}
SourceFile: "Refreshable.java"