https://github.com/datastax/java-driver/java-driver-core: A driver for Apache Cassandra(R) 2.1+ that works exclusively with the Cassandra Query Language version 3 (CQL3) and Cassandra's native protocol versions 3 and above.
  • Various (DataStax) 
public class com.datastax.oss.driver.internal.core.util.concurrent.RunOrSchedule
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.datastax.oss.driver.internal.core.util.concurrent.RunOrSchedule
  super_class: java.lang.Object
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.datastax.oss.driver.internal.core.util.concurrent.RunOrSchedule this
         0: .line 51
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.datastax.oss.driver.internal.core.util.concurrent.RunOrSchedule this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/datastax/oss/driver/internal/core/util/concurrent/RunOrSchedule;

  public static void on(io.netty.util.concurrent.EventExecutor, java.lang.Runnable);
    descriptor: (Lio/netty/util/concurrent/EventExecutor;Ljava/lang/Runnable;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.util.concurrent.EventExecutor executor
        start local 1 // java.lang.Runnable task
         0: .line 54
            aload 0 /* executor */
            invokeinterface io.netty.util.concurrent.EventExecutor.inEventLoop:()Z
            ifeq 3
         1: .line 55
            aload 1 /* task */
            invokeinterface java.lang.Runnable.run:()V
         2: .line 56
            goto 4
         3: .line 57
      StackMap locals:
      StackMap stack:
            aload 0 /* executor */
            aload 1 /* task */
            invokeinterface io.netty.util.concurrent.EventExecutor.submit:(Ljava/lang/Runnable;)Lio/netty/util/concurrent/Future;
            invokedynamic operationComplete()Lio/netty/util/concurrent/GenericFutureListener;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Lio/netty/util/concurrent/Future;)V
                  com/datastax/oss/driver/internal/core/util/concurrent/UncaughtExceptions.log(Lio/netty/util/concurrent/Future;)V (6)
                  (Lio/netty/util/concurrent/Future;)V
            invokeinterface io.netty.util.concurrent.Future.addListener:(Lio/netty/util/concurrent/GenericFutureListener;)Lio/netty/util/concurrent/Future;
            pop
         4: .line 59
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.lang.Runnable task
        end local 0 // io.netty.util.concurrent.EventExecutor executor
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    5     0  executor  Lio/netty/util/concurrent/EventExecutor;
            0    5     1      task  Ljava/lang/Runnable;
    MethodParameters:
          Name  Flags
      executor  
      task      

  public static <T> java.util.function.Consumer<T> on(io.netty.util.concurrent.EventExecutor, java.util.function.Consumer<T>);
    descriptor: (Lio/netty/util/concurrent/EventExecutor;Ljava/util/function/Consumer;)Ljava/util/function/Consumer;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.util.concurrent.EventExecutor executor
        start local 1 // java.util.function.Consumer task
         0: .line 62
            aload 0 /* executor */
            aload 1 /* task */
            invokedynamic accept(Lio/netty/util/concurrent/EventExecutor;Ljava/util/function/Consumer;)Ljava/util/function/Consumer;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Ljava/lang/Object;)V
                  com/datastax/oss/driver/internal/core/util/concurrent/RunOrSchedule.lambda$1(Lio/netty/util/concurrent/EventExecutor;Ljava/util/function/Consumer;Ljava/lang/Object;)V (6)
                  (Ljava/lang/Object;)V
            areturn
        end local 1 // java.util.function.Consumer task
        end local 0 // io.netty.util.concurrent.EventExecutor executor
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    1     0  executor  Lio/netty/util/concurrent/EventExecutor;
            0    1     1      task  Ljava/util/function/Consumer<TT;>;
    Signature: <T:Ljava/lang/Object;>(Lio/netty/util/concurrent/EventExecutor;Ljava/util/function/Consumer<TT;>;)Ljava/util/function/Consumer<TT;>;
    MethodParameters:
          Name  Flags
      executor  
      task      

  public static <T> java.util.concurrent.CompletionStage<T> on(io.netty.util.concurrent.EventExecutor, java.util.concurrent.Callable<java.util.concurrent.CompletionStage<T>>);
    descriptor: (Lio/netty/util/concurrent/EventExecutor;Ljava/util/concurrent/Callable;)Ljava/util/concurrent/CompletionStage;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // io.netty.util.concurrent.EventExecutor executor
        start local 1 // java.util.concurrent.Callable task
         0: .line 73
            aload 0 /* executor */
            invokeinterface io.netty.util.concurrent.EventExecutor.inEventLoop:()Z
            ifeq 5
         1: .line 75
            aload 1 /* task */
            invokeinterface java.util.concurrent.Callable.call:()Ljava/lang/Object;
            checkcast java.util.concurrent.CompletionStage
         2: areturn
         3: .line 76
      StackMap locals:
      StackMap stack: java.lang.Exception
            astore 2 /* e */
        start local 2 // java.lang.Exception e
         4: .line 77
            aload 2 /* e */
            invokestatic com.datastax.oss.driver.internal.core.util.concurrent.CompletableFutures.failedFuture:(Ljava/lang/Throwable;)Ljava/util/concurrent/CompletableFuture;
            areturn
        end local 2 // java.lang.Exception e
         5: .line 80
      StackMap locals:
      StackMap stack:
            new java.util.concurrent.CompletableFuture
            dup
            invokespecial java.util.concurrent.CompletableFuture.<init>:()V
            astore 2 /* result */
        start local 2 // java.util.concurrent.CompletableFuture result
         6: .line 81
            aload 0 /* executor */
         7: .line 82
            aload 1 /* task */
            invokeinterface io.netty.util.concurrent.EventExecutor.submit:(Ljava/util/concurrent/Callable;)Lio/netty/util/concurrent/Future;
         8: .line 84
            aload 2 /* result */
            invokedynamic operationComplete(Ljava/util/concurrent/CompletableFuture;)Lio/netty/util/concurrent/GenericFutureListener;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Lio/netty/util/concurrent/Future;)V
                  com/datastax/oss/driver/internal/core/util/concurrent/RunOrSchedule.lambda$4(Ljava/util/concurrent/CompletableFuture;Lio/netty/util/concurrent/Future;)V (6)
                  (Lio/netty/util/concurrent/Future;)V
         9: .line 83
            invokeinterface io.netty.util.concurrent.Future.addListener:(Lio/netty/util/concurrent/GenericFutureListener;)Lio/netty/util/concurrent/Future;
            pop
        10: .line 91
            aload 2 /* result */
            areturn
        end local 2 // java.util.concurrent.CompletableFuture result
        end local 1 // java.util.concurrent.Callable task
        end local 0 // io.netty.util.concurrent.EventExecutor executor
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   11     0  executor  Lio/netty/util/concurrent/EventExecutor;
            0   11     1      task  Ljava/util/concurrent/Callable<Ljava/util/concurrent/CompletionStage<TT;>;>;
            4    5     2         e  Ljava/lang/Exception;
            6   11     2    result  Ljava/util/concurrent/CompletableFuture<TT;>;
      Exception table:
        from    to  target  type
           1     2       3  Class java.lang.Exception
    Signature: <T:Ljava/lang/Object;>(Lio/netty/util/concurrent/EventExecutor;Ljava/util/concurrent/Callable<Ljava/util/concurrent/CompletionStage<TT;>;>;)Ljava/util/concurrent/CompletionStage<TT;>;
    MethodParameters:
          Name  Flags
      executor  
      task      

  private static void lambda$1(io.netty.util.concurrent.EventExecutor, java.util.function.Consumer, java.lang.Object);
    descriptor: (Lio/netty/util/concurrent/EventExecutor;Ljava/util/function/Consumer;Ljava/lang/Object;)V
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
        start local 2 // java.lang.Object t
         0: .line 63
            aload 0
            invokeinterface io.netty.util.concurrent.EventExecutor.inEventLoop:()Z
            ifeq 3
         1: .line 64
            aload 1
            aload 2 /* t */
            invokeinterface java.util.function.Consumer.accept:(Ljava/lang/Object;)V
         2: .line 65
            goto 4
         3: .line 66
      StackMap locals:
      StackMap stack:
            aload 0
            aload 1
            aload 2 /* t */
            invokedynamic run(Ljava/util/function/Consumer;Ljava/lang/Object;)Ljava/lang/Runnable;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  ()V
                  com/datastax/oss/driver/internal/core/util/concurrent/RunOrSchedule.lambda$2(Ljava/util/function/Consumer;Ljava/lang/Object;)V (6)
                  ()V
            invokeinterface io.netty.util.concurrent.EventExecutor.submit:(Ljava/lang/Runnable;)Lio/netty/util/concurrent/Future;
            invokedynamic operationComplete()Lio/netty/util/concurrent/GenericFutureListener;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Lio/netty/util/concurrent/Future;)V
                  com/datastax/oss/driver/internal/core/util/concurrent/UncaughtExceptions.log(Lio/netty/util/concurrent/Future;)V (6)
                  (Lio/netty/util/concurrent/Future;)V
            invokeinterface io.netty.util.concurrent.Future.addListener:(Lio/netty/util/concurrent/GenericFutureListener;)Lio/netty/util/concurrent/Future;
            pop
         4: .line 68
      StackMap locals:
      StackMap stack:
            return
        end local 2 // java.lang.Object t
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     2     t  TT;

  private static void lambda$4(java.util.concurrent.CompletableFuture, io.netty.util.concurrent.Future);
    descriptor: (Ljava/util/concurrent/CompletableFuture;Lio/netty/util/concurrent/Future;)V
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
        start local 1 // io.netty.util.concurrent.Future f
         0: .line 85
            aload 1 /* f */
            invokeinterface io.netty.util.concurrent.Future.isSuccess:()Z
            ifeq 3
         1: .line 86
            aload 1 /* f */
            invokeinterface io.netty.util.concurrent.Future.getNow:()Ljava/lang/Object;
            checkcast java.util.concurrent.CompletionStage
            aload 0
            invokestatic com.datastax.oss.driver.internal.core.util.concurrent.CompletableFutures.completeFrom:(Ljava/util/concurrent/CompletionStage;Ljava/util/concurrent/CompletableFuture;)V
         2: .line 87
            goto 4
         3: .line 88
      StackMap locals:
      StackMap stack:
            aload 0
            aload 1 /* f */
            invokeinterface io.netty.util.concurrent.Future.cause:()Ljava/lang/Throwable;
            invokevirtual java.util.concurrent.CompletableFuture.completeExceptionally:(Ljava/lang/Throwable;)Z
            pop
         4: .line 90
      StackMap locals:
      StackMap stack:
            return
        end local 1 // io.netty.util.concurrent.Future f
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     1     f  Lio/netty/util/concurrent/Future<Ljava/util/concurrent/CompletionStage<TT;>;>;
    Exceptions:
      throws java.lang.Exception

  private static void lambda$2(java.util.function.Consumer, java.lang.Object);
    descriptor: (Ljava/util/function/Consumer;Ljava/lang/Object;)V
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 66
            aload 0
            aload 1
            invokeinterface java.util.function.Consumer.accept:(Ljava/lang/Object;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "RunOrSchedule.java"
InnerClasses:
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles