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.AbstractExecutionThreadService$1 extends com.google.common.util.concurrent.AbstractService
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.util.concurrent.AbstractExecutionThreadService$1
  super_class: com.google.common.util.concurrent.AbstractService
{
  final com.google.common.util.concurrent.AbstractExecutionThreadService this$0;
    descriptor: Lcom/google/common/util/concurrent/AbstractExecutionThreadService;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.google.common.util.concurrent.AbstractExecutionThreadService);
    descriptor: (Lcom/google/common/util/concurrent/AbstractExecutionThreadService;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.util.concurrent.AbstractExecutionThreadService$1 this
         0: .line 43
            aload 0 /* this */
            aload 1
            putfield com.google.common.util.concurrent.AbstractExecutionThreadService$1.this$0:Lcom/google/common/util/concurrent/AbstractExecutionThreadService;
            aload 0 /* this */
            invokespecial com.google.common.util.concurrent.AbstractService.<init>:()V
            return
        end local 0 // com.google.common.util.concurrent.AbstractExecutionThreadService$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/util/concurrent/AbstractExecutionThreadService$1;
    MethodParameters:
        Name  Flags
      this$0  final

  protected final void doStart();
    descriptor: ()V
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL
    Code:
      stack=4, locals=2, args_size=1
        start local 0 // com.google.common.util.concurrent.AbstractExecutionThreadService$1 this
         0: .line 48
            aload 0 /* this */
            getfield com.google.common.util.concurrent.AbstractExecutionThreadService$1.this$0:Lcom/google/common/util/concurrent/AbstractExecutionThreadService;
            invokevirtual com.google.common.util.concurrent.AbstractExecutionThreadService.executor:()Ljava/util/concurrent/Executor;
         1: .line 49
            new com.google.common.util.concurrent.AbstractExecutionThreadService$1$1
            dup
            aload 0 /* this */
            invokespecial com.google.common.util.concurrent.AbstractExecutionThreadService$1$1.<init>:(Lcom/google/common/util/concurrent/AbstractExecutionThreadService$1;)V
         2: .line 47
            invokestatic com.google.common.util.concurrent.MoreExecutors.renamingDecorator:(Ljava/util/concurrent/Executor;Lcom/google/common/base/Supplier;)Ljava/util/concurrent/Executor;
         3: .line 46
            astore 1 /* executor */
        start local 1 // java.util.concurrent.Executor executor
         4: .line 55
            aload 1 /* executor */
         5: .line 56
            new com.google.common.util.concurrent.AbstractExecutionThreadService$1$2
            dup
            aload 0 /* this */
            invokespecial com.google.common.util.concurrent.AbstractExecutionThreadService$1$2.<init>:(Lcom/google/common/util/concurrent/AbstractExecutionThreadService$1;)V
         6: .line 55
            invokeinterface java.util.concurrent.Executor.execute:(Ljava/lang/Runnable;)V
         7: .line 91
            return
        end local 1 // java.util.concurrent.Executor executor
        end local 0 // com.google.common.util.concurrent.AbstractExecutionThreadService$1 this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    8     0      this  Lcom/google/common/util/concurrent/AbstractExecutionThreadService$1;
            4    8     1  executor  Ljava/util/concurrent/Executor;

  protected void doStop();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.util.concurrent.AbstractExecutionThreadService$1 this
         0: .line 95
            aload 0 /* this */
            getfield com.google.common.util.concurrent.AbstractExecutionThreadService$1.this$0:Lcom/google/common/util/concurrent/AbstractExecutionThreadService;
            invokevirtual com.google.common.util.concurrent.AbstractExecutionThreadService.triggerShutdown:()V
         1: .line 96
            return
        end local 0 // com.google.common.util.concurrent.AbstractExecutionThreadService$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/google/common/util/concurrent/AbstractExecutionThreadService$1;

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.util.concurrent.AbstractExecutionThreadService$1 this
         0: .line 100
            aload 0 /* this */
            getfield com.google.common.util.concurrent.AbstractExecutionThreadService$1.this$0:Lcom/google/common/util/concurrent/AbstractExecutionThreadService;
            invokevirtual com.google.common.util.concurrent.AbstractExecutionThreadService.toString:()Ljava/lang/String;
            areturn
        end local 0 // com.google.common.util.concurrent.AbstractExecutionThreadService$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/util/concurrent/AbstractExecutionThreadService$1;

  static com.google.common.util.concurrent.AbstractExecutionThreadService access$0(com.google.common.util.concurrent.AbstractExecutionThreadService$1);
    descriptor: (Lcom/google/common/util/concurrent/AbstractExecutionThreadService$1;)Lcom/google/common/util/concurrent/AbstractExecutionThreadService;
    flags: (0x1008) ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 43
            aload 0
            getfield com.google.common.util.concurrent.AbstractExecutionThreadService$1.this$0:Lcom/google/common/util/concurrent/AbstractExecutionThreadService;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "AbstractExecutionThreadService.java"
EnclosingMethod: com.google.common.util.concurrent.AbstractExecutionThreadService
NestHost: com.google.common.util.concurrent.AbstractExecutionThreadService
InnerClasses:
  com.google.common.util.concurrent.AbstractExecutionThreadService$1
  com.google.common.util.concurrent.AbstractExecutionThreadService$1$1
  com.google.common.util.concurrent.AbstractExecutionThreadService$1$2