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.ServiceManager$ServiceManagerState$2 implements com.google.common.util.concurrent.ListenerCallQueue$Event<com.google.common.util.concurrent.ServiceManager$Listener>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.util.concurrent.ServiceManager$ServiceManagerState$2
  super_class: java.lang.Object
{
  final com.google.common.util.concurrent.ServiceManager$ServiceManagerState this$1;
    descriptor: Lcom/google/common/util/concurrent/ServiceManager$ServiceManagerState;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

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

  void <init>(com.google.common.util.concurrent.ServiceManager$ServiceManagerState, com.google.common.util.concurrent.Service);
    descriptor: (Lcom/google/common/util/concurrent/ServiceManager$ServiceManagerState;Lcom/google/common/util/concurrent/Service;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.google.common.util.concurrent.ServiceManager$ServiceManagerState$2 this
         0: .line 714
            aload 0 /* this */
            aload 1
            putfield com.google.common.util.concurrent.ServiceManager$ServiceManagerState$2.this$1:Lcom/google/common/util/concurrent/ServiceManager$ServiceManagerState;
            aload 0 /* this */
            aload 2
            putfield com.google.common.util.concurrent.ServiceManager$ServiceManagerState$2.val$service:Lcom/google/common/util/concurrent/Service;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.google.common.util.concurrent.ServiceManager$ServiceManagerState$2 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/util/concurrent/ServiceManager$ServiceManagerState$2;
    MethodParameters:
             Name  Flags
      this$0       final
      val$service  final

  public void call(com.google.common.util.concurrent.ServiceManager$Listener);
    descriptor: (Lcom/google/common/util/concurrent/ServiceManager$Listener;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.util.concurrent.ServiceManager$ServiceManagerState$2 this
        start local 1 // com.google.common.util.concurrent.ServiceManager$Listener listener
         0: .line 717
            aload 1 /* listener */
            aload 0 /* this */
            getfield com.google.common.util.concurrent.ServiceManager$ServiceManagerState$2.val$service:Lcom/google/common/util/concurrent/Service;
            invokevirtual com.google.common.util.concurrent.ServiceManager$Listener.failure:(Lcom/google/common/util/concurrent/Service;)V
         1: .line 718
            return
        end local 1 // com.google.common.util.concurrent.ServiceManager$Listener listener
        end local 0 // com.google.common.util.concurrent.ServiceManager$ServiceManagerState$2 this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0      this  Lcom/google/common/util/concurrent/ServiceManager$ServiceManagerState$2;
            0    2     1  listener  Lcom/google/common/util/concurrent/ServiceManager$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.ServiceManager$ServiceManagerState$2 this
         0: .line 722
            new java.lang.StringBuilder
            dup
            ldc "failed({service="
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield com.google.common.util.concurrent.ServiceManager$ServiceManagerState$2.val$service:Lcom/google/common/util/concurrent/Service;
            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.ServiceManager$ServiceManagerState$2 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/util/concurrent/ServiceManager$ServiceManagerState$2;

  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.ServiceManager$Listener
            invokevirtual com.google.common.util.concurrent.ServiceManager$ServiceManagerState$2.call:(Lcom/google/common/util/concurrent/ServiceManager$Listener;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Lcom/google/common/util/concurrent/ListenerCallQueue$Event<Lcom/google/common/util/concurrent/ServiceManager$Listener;>;
SourceFile: "ServiceManager.java"
EnclosingMethod: com.google.common.util.concurrent.ServiceManager$ServiceManagerState.enqueueFailedEvent:(Lcom/google/common/util/concurrent/Service;)V
NestHost: com.google.common.util.concurrent.ServiceManager
InnerClasses:
  abstract Event = com.google.common.util.concurrent.ListenerCallQueue$Event of com.google.common.util.concurrent.ListenerCallQueue
  public abstract Listener = com.google.common.util.concurrent.ServiceManager$Listener of com.google.common.util.concurrent.ServiceManager
  private final ServiceManagerState = com.google.common.util.concurrent.ServiceManager$ServiceManagerState of com.google.common.util.concurrent.ServiceManager
  com.google.common.util.concurrent.ServiceManager$ServiceManagerState$2