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.WrappingExecutorService$1 implements java.lang.Runnable
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.util.concurrent.WrappingExecutorService$1
  super_class: java.lang.Object
{
  final com.google.common.util.concurrent.WrappingExecutorService this$0;
    descriptor: Lcom/google/common/util/concurrent/WrappingExecutorService;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private final java.util.concurrent.Callable val$wrapped;
    descriptor: Ljava/util/concurrent/Callable;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.google.common.util.concurrent.WrappingExecutorService, java.util.concurrent.Callable);
    descriptor: (Lcom/google/common/util/concurrent/WrappingExecutorService;Ljava/util/concurrent/Callable;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.google.common.util.concurrent.WrappingExecutorService$1 this
         0: .line 64
            aload 0 /* this */
            aload 1
            putfield com.google.common.util.concurrent.WrappingExecutorService$1.this$0:Lcom/google/common/util/concurrent/WrappingExecutorService;
            aload 0 /* this */
            aload 2
            putfield com.google.common.util.concurrent.WrappingExecutorService$1.val$wrapped:Ljava/util/concurrent/Callable;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.google.common.util.concurrent.WrappingExecutorService$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/util/concurrent/WrappingExecutorService$1;
    MethodParameters:
             Name  Flags
      this$0       final
      val$wrapped  final

  public void run();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // com.google.common.util.concurrent.WrappingExecutorService$1 this
         0: .line 68
            aload 0 /* this */
            getfield com.google.common.util.concurrent.WrappingExecutorService$1.val$wrapped:Ljava/util/concurrent/Callable;
            invokeinterface java.util.concurrent.Callable.call:()Ljava/lang/Object;
            pop
         1: .line 69
            goto 5
      StackMap locals:
      StackMap stack: java.lang.Exception
         2: astore 1 /* e */
        start local 1 // java.lang.Exception e
         3: .line 70
            aload 1 /* e */
            invokestatic com.google.common.base.Throwables.throwIfUnchecked:(Ljava/lang/Throwable;)V
         4: .line 71
            new java.lang.RuntimeException
            dup
            aload 1 /* e */
            invokespecial java.lang.RuntimeException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 1 // java.lang.Exception e
         5: .line 73
      StackMap locals:
      StackMap stack:
            return
        end local 0 // com.google.common.util.concurrent.WrappingExecutorService$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lcom/google/common/util/concurrent/WrappingExecutorService$1;
            3    5     1     e  Ljava/lang/Exception;
      Exception table:
        from    to  target  type
           0     1       2  Class java.lang.Exception
}
SourceFile: "WrappingExecutorService.java"
EnclosingMethod: com.google.common.util.concurrent.WrappingExecutorService.wrapTask:(Ljava/lang/Runnable;)Ljava/lang/Runnable;
NestHost: com.google.common.util.concurrent.WrappingExecutorService
InnerClasses:
  com.google.common.util.concurrent.WrappingExecutorService$1