http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project) 
class io.netty.util.collection.ByteObjectHashMap$1 implements java.lang.Iterable<io.netty.util.collection.ByteObjectMap$PrimitiveEntry<V>>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: io.netty.util.collection.ByteObjectHashMap$1
  super_class: java.lang.Object
{
  final io.netty.util.collection.ByteObjectHashMap this$0;
    descriptor: Lio/netty/util/collection/ByteObjectHashMap;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(io.netty.util.collection.ByteObjectHashMap);
    descriptor: (Lio/netty/util/collection/ByteObjectHashMap;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.util.collection.ByteObjectHashMap$1 this
         0: .line 64
            aload 0 /* this */
            aload 1
            putfield io.netty.util.collection.ByteObjectHashMap$1.this$0:Lio/netty/util/collection/ByteObjectHashMap;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // io.netty.util.collection.ByteObjectHashMap$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/util/collection/ByteObjectHashMap$1;
    MethodParameters:
        Name  Flags
      this$0  final

  public java.util.Iterator<io.netty.util.collection.ByteObjectMap$PrimitiveEntry<V>> iterator();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // io.netty.util.collection.ByteObjectHashMap$1 this
         0: .line 67
            new io.netty.util.collection.ByteObjectHashMap$PrimitiveIterator
            dup
            aload 0 /* this */
            getfield io.netty.util.collection.ByteObjectHashMap$1.this$0:Lio/netty/util/collection/ByteObjectHashMap;
            invokespecial io.netty.util.collection.ByteObjectHashMap$PrimitiveIterator.<init>:(Lio/netty/util/collection/ByteObjectHashMap;)V
            areturn
        end local 0 // io.netty.util.collection.ByteObjectHashMap$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/util/collection/ByteObjectHashMap$1;
    Signature: ()Ljava/util/Iterator<Lio/netty/util/collection/ByteObjectMap$PrimitiveEntry<TV;>;>;
}
Signature: Ljava/lang/Object;Ljava/lang/Iterable<Lio/netty/util/collection/ByteObjectMap$PrimitiveEntry<TV;>;>;
SourceFile: "ByteObjectHashMap.java"
EnclosingMethod: io.netty.util.collection.ByteObjectHashMap
NestHost: io.netty.util.collection.ByteObjectHashMap
InnerClasses:
  io.netty.util.collection.ByteObjectHashMap$1
  private final PrimitiveIterator = io.netty.util.collection.ByteObjectHashMap$PrimitiveIterator of io.netty.util.collection.ByteObjectHashMap
  public abstract PrimitiveEntry = io.netty.util.collection.ByteObjectMap$PrimitiveEntry of io.netty.util.collection.ByteObjectMap