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.buffer.PooledUnsafeHeapByteBuf$1 extends io.netty.util.Recycler<io.netty.buffer.PooledUnsafeHeapByteBuf>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: io.netty.buffer.PooledUnsafeHeapByteBuf$1
  super_class: io.netty.util.Recycler
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.buffer.PooledUnsafeHeapByteBuf$1 this
         0: .line 24
            aload 0 /* this */
            invokespecial io.netty.util.Recycler.<init>:()V
            return
        end local 0 // io.netty.buffer.PooledUnsafeHeapByteBuf$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/buffer/PooledUnsafeHeapByteBuf$1;

  protected io.netty.buffer.PooledUnsafeHeapByteBuf newObject(io.netty.util.Recycler$Handle<io.netty.buffer.PooledUnsafeHeapByteBuf>);
    descriptor: (Lio/netty/util/Recycler$Handle;)Lio/netty/buffer/PooledUnsafeHeapByteBuf;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // io.netty.buffer.PooledUnsafeHeapByteBuf$1 this
        start local 1 // io.netty.util.Recycler$Handle handle
         0: .line 27
            new io.netty.buffer.PooledUnsafeHeapByteBuf
            dup
            aload 1 /* handle */
            iconst_0
            invokespecial io.netty.buffer.PooledUnsafeHeapByteBuf.<init>:(Lio/netty/util/Recycler$Handle;I)V
            areturn
        end local 1 // io.netty.util.Recycler$Handle handle
        end local 0 // io.netty.buffer.PooledUnsafeHeapByteBuf$1 this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    1     0    this  Lio/netty/buffer/PooledUnsafeHeapByteBuf$1;
            0    1     1  handle  Lio/netty/util/Recycler$Handle<Lio/netty/buffer/PooledUnsafeHeapByteBuf;>;
    Signature: (Lio/netty/util/Recycler$Handle<Lio/netty/buffer/PooledUnsafeHeapByteBuf;>;)Lio/netty/buffer/PooledUnsafeHeapByteBuf;
    MethodParameters:
        Name  Flags
      handle  

  protected java.lang.Object newObject(io.netty.util.Recycler$Handle);
    descriptor: (Lio/netty/util/Recycler$Handle;)Ljava/lang/Object;
    flags: (0x1044) ACC_PROTECTED, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast io.netty.util.Recycler$Handle
            invokevirtual io.netty.buffer.PooledUnsafeHeapByteBuf$1.newObject:(Lio/netty/util/Recycler$Handle;)Lio/netty/buffer/PooledUnsafeHeapByteBuf;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Lio/netty/util/Recycler<Lio/netty/buffer/PooledUnsafeHeapByteBuf;>;
SourceFile: "PooledUnsafeHeapByteBuf.java"
EnclosingMethod: io.netty.buffer.PooledUnsafeHeapByteBuf
NestHost: io.netty.buffer.PooledUnsafeHeapByteBuf
InnerClasses:
  io.netty.buffer.PooledUnsafeHeapByteBuf$1
  public abstract Handle = io.netty.util.Recycler$Handle of io.netty.util.Recycler