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. 
class com.google.common.util.concurrent.AbstractService$5 implements com.google.common.util.concurrent.ListenerCallQueue$Event<com.google.common.util.concurrent.Service$Listener>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.util.concurrent.AbstractService$5
  super_class: java.lang.Object
{
  final com.google.common.util.concurrent.AbstractService this$0;
    descriptor: Lcom/google/common/util/concurrent/AbstractService;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private final com.google.common.util.concurrent.Service$State val$from;
    descriptor: Lcom/google/common/util/concurrent/Service$State;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  private final java.lang.Throwable val$cause;
    descriptor: Ljava/lang/Throwable;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.google.common.util.concurrent.AbstractService, com.google.common.util.concurrent.Service$State, java.lang.Throwable);
    descriptor: (Lcom/google/common/util/concurrent/AbstractService;Lcom/google/common/util/concurrent/Service$State;Ljava/lang/Throwable;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=4, args_size=4
        start local 0 // com.google.common.util.concurrent.AbstractService$5 this
         0: .line 522
            aload 0 /* this */
            aload 1
            putfield com.google.common.util.concurrent.AbstractService$5.this$0:Lcom/google/common/util/concurrent/AbstractService;
            aload 0 /* this */
            aload 2
            putfield com.google.common.util.concurrent.AbstractService$5.val$from:Lcom/google/common/util/concurrent/Service$State;
            aload 0 /* this */
            aload 3
            putfield com.google.common.util.concurrent.AbstractService$5.val$cause:Ljava/lang/Throwable;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.google.common.util.concurrent.AbstractService$5 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/util/concurrent/AbstractService$5;
    MethodParameters:
           Name  Flags
      this$0     final
      val$from   final
      val$cause  final

  public void call(com.google.common.util.concurrent.Service$Listener);
    descriptor: (Lcom/google/common/util/concurrent/Service$Listener;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // com.google.common.util.concurrent.AbstractService$5 this
        start local 1 // com.google.common.util.concurrent.Service$Listener listener
         0: .line 525
            aload 1 /* listener */
            aload 0 /* this */
            getfield com.google.common.util.concurrent.AbstractService$5.val$from:Lcom/google/common/util/concurrent/Service$State;
            aload 0 /* this */
            getfield com.google.common.util.concurrent.AbstractService$5.val$cause:Ljava/lang/Throwable;
            invokevirtual com.google.common.util.concurrent.Service$Listener.failed:(Lcom/google/common/util/concurrent/Service$State;Ljava/lang/Throwable;)V
         1: .line 526
            return
        end local 1 // com.google.common.util.concurrent.Service$Listener listener
        end local 0 // com.google.common.util.concurrent.AbstractService$5 this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0      this  Lcom/google/common/util/concurrent/AbstractService$5;
            0    2     1  listener  Lcom/google/common/util/concurrent/Service$Listener;
    MethodParameters:
          Name  Flags
      listener  

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.google.common.util.concurrent.AbstractService$5 this
         0: .line 530
            new java.lang.StringBuilder
            dup
            ldc "failed({from = "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield com.google.common.util.concurrent.AbstractService$5.val$from:Lcom/google/common/util/concurrent/Service$State;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            ldc ", cause = "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* this */
            getfield com.google.common.util.concurrent.AbstractService$5.val$cause:Ljava/lang/Throwable;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            ldc "})"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 0 // com.google.common.util.concurrent.AbstractService$5 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/util/concurrent/AbstractService$5;

  public void call(java.lang.Object);
    descriptor: (Ljava/lang/Object;)V
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast com.google.common.util.concurrent.Service$Listener
            invokevirtual com.google.common.util.concurrent.AbstractService$5.call:(Lcom/google/common/util/concurrent/Service$Listener;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Lcom/google/common/util/concurrent/ListenerCallQueue$Event<Lcom/google/common/util/concurrent/Service$Listener;>;
SourceFile: "AbstractService.java"
EnclosingMethod: com.google.common.util.concurrent.AbstractService.enqueueFailedEvent:(Lcom/google/common/util/concurrent/Service$State;Ljava/lang/Throwable;)V
NestHost: com.google.common.util.concurrent.AbstractService
InnerClasses:
  com.google.common.util.concurrent.AbstractService$5
  abstract Event = com.google.common.util.concurrent.ListenerCallQueue$Event of com.google.common.util.concurrent.ListenerCallQueue
  public abstract Listener = com.google.common.util.concurrent.Service$Listener of com.google.common.util.concurrent.Service
  public abstract State = com.google.common.util.concurrent.Service$State of com.google.common.util.concurrent.Service