http://www.eclipse.org/jetty: Utility classes for Jetty (Webtide) 
public interface org.eclipse.jetty.util.thread.Sweeper$Sweepable
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.eclipse.jetty.util.thread.Sweeper$Sweepable
  super_class: java.lang.Object
{
  public abstract boolean sweep();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "Sweeper.java"
NestHost: org.eclipse.jetty.util.thread.Sweeper
InnerClasses:
  public abstract Sweepable = org.eclipse.jetty.util.thread.Sweeper$Sweepable of org.eclipse.jetty.util.thread.Sweeper