https://github.com/google/guava/guava: Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. 
interface com.google.common.util.concurrent.CycleDetectingLockFactory$CycleDetectingLock
  minor version: 0
  major version: 59
  flags: flags: (0x0600) ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.google.common.util.concurrent.CycleDetectingLockFactory$CycleDetectingLock
  super_class: java.lang.Object
{
  public abstract com.google.common.util.concurrent.CycleDetectingLockFactory$LockGraphNode getLockGraphNode();
    descriptor: ()Lcom/google/common/util/concurrent/CycleDetectingLockFactory$LockGraphNode;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract boolean isAcquiredByCurrentThread();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "CycleDetectingLockFactory.java"
NestHost: com.google.common.util.concurrent.CycleDetectingLockFactory
InnerClasses:
  private abstract CycleDetectingLock = com.google.common.util.concurrent.CycleDetectingLockFactory$CycleDetectingLock of com.google.common.util.concurrent.CycleDetectingLockFactory
  private LockGraphNode = com.google.common.util.concurrent.CycleDetectingLockFactory$LockGraphNode of com.google.common.util.concurrent.CycleDetectingLockFactory