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.handler.codec.DefaultHeaders$NameValidator$1 implements io.netty.handler.codec.DefaultHeaders$NameValidator
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: io.netty.handler.codec.DefaultHeaders$NameValidator$1
  super_class: java.lang.Object
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.DefaultHeaders$NameValidator$1 this
         0: .line 67
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // io.netty.handler.codec.DefaultHeaders$NameValidator$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/DefaultHeaders$NameValidator$1;

  public void validateName(java.lang.Object);
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.DefaultHeaders$NameValidator$1 this
        start local 1 // java.lang.Object name
         0: .line 70
            aload 1 /* name */
            ldc "name"
            invokestatic io.netty.util.internal.ObjectUtil.checkNotNull:(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;
            pop
         1: .line 71
            return
        end local 1 // java.lang.Object name
        end local 0 // io.netty.handler.codec.DefaultHeaders$NameValidator$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/handler/codec/DefaultHeaders$NameValidator$1;
            0    2     1  name  Ljava/lang/Object;
    MethodParameters:
      Name  Flags
      name  
}
SourceFile: "DefaultHeaders.java"
EnclosingMethod: io.netty.handler.codec.DefaultHeaders$NameValidator
NestHost: io.netty.handler.codec.DefaultHeaders
InnerClasses:
  public abstract NameValidator = io.netty.handler.codec.DefaultHeaders$NameValidator of io.netty.handler.codec.DefaultHeaders
  io.netty.handler.codec.DefaultHeaders$NameValidator$1