http://www.reactive-streams.org/: A Protocol for Asynchronous Non-Blocking Data Sequence 
public final class org.reactivestreams.FlowAdapters
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.reactivestreams.FlowAdapters
  super_class: java.lang.Object
{
  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.reactivestreams.FlowAdapters this
         0: .line 22
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 23
            new java.lang.IllegalStateException
            dup
            ldc "No instances!"
            invokespecial java.lang.IllegalStateException.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // org.reactivestreams.FlowAdapters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/reactivestreams/FlowAdapters;
}
SourceFile: "FlowAdapters.java"
NestMembers:
  org.reactivestreams.FlowAdapters$FlowPublisherFromReactive  org.reactivestreams.FlowAdapters$FlowToReactiveProcessor  org.reactivestreams.FlowAdapters$FlowToReactiveSubscriber  org.reactivestreams.FlowAdapters$FlowToReactiveSubscription  org.reactivestreams.FlowAdapters$ReactivePublisherFromFlow  org.reactivestreams.FlowAdapters$ReactiveToFlowProcessor  org.reactivestreams.FlowAdapters$ReactiveToFlowSubscriber  org.reactivestreams.FlowAdapters$ReactiveToFlowSubscription
InnerClasses:
  final FlowPublisherFromReactive = org.reactivestreams.FlowAdapters$FlowPublisherFromReactive of org.reactivestreams.FlowAdapters
  final FlowToReactiveProcessor = org.reactivestreams.FlowAdapters$FlowToReactiveProcessor of org.reactivestreams.FlowAdapters
  final FlowToReactiveSubscriber = org.reactivestreams.FlowAdapters$FlowToReactiveSubscriber of org.reactivestreams.FlowAdapters
  final FlowToReactiveSubscription = org.reactivestreams.FlowAdapters$FlowToReactiveSubscription of org.reactivestreams.FlowAdapters
  final ReactivePublisherFromFlow = org.reactivestreams.FlowAdapters$ReactivePublisherFromFlow of org.reactivestreams.FlowAdapters
  final ReactiveToFlowProcessor = org.reactivestreams.FlowAdapters$ReactiveToFlowProcessor of org.reactivestreams.FlowAdapters
  final ReactiveToFlowSubscriber = org.reactivestreams.FlowAdapters$ReactiveToFlowSubscriber of org.reactivestreams.FlowAdapters
  final ReactiveToFlowSubscription = org.reactivestreams.FlowAdapters$ReactiveToFlowSubscription of org.reactivestreams.FlowAdapters