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) 
public interface io.netty.handler.codec.smtp.SmtpRequest
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: io.netty.handler.codec.smtp.SmtpRequest
  super_class: java.lang.Object
{
  public abstract io.netty.handler.codec.smtp.SmtpCommand command();
    descriptor: ()Lio/netty/handler/codec/smtp/SmtpCommand;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract java.util.List<java.lang.CharSequence> parameters();
    descriptor: ()Ljava/util/List;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: ()Ljava/util/List<Ljava/lang/CharSequence;>;
}
SourceFile: "SmtpRequest.java"