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 final class io.netty.handler.codec.socks.SocksProtocolVersion extends java.lang.Enum<io.netty.handler.codec.socks.SocksProtocolVersion>
  minor version: 0
  major version: 59
  flags: flags: (0x4031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER, ACC_ANNOTATION
  this_class: io.netty.handler.codec.socks.SocksProtocolVersion
  super_class: java.lang.Enum
{
  public static final io.netty.handler.codec.socks.SocksProtocolVersion SOCKS4a;
    descriptor: Lio/netty/handler/codec/socks/SocksProtocolVersion;
    flags: (0x4019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL, ACC_ANNOTATION

  public static final io.netty.handler.codec.socks.SocksProtocolVersion SOCKS5;
    descriptor: Lio/netty/handler/codec/socks/SocksProtocolVersion;
    flags: (0x4019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL, ACC_ANNOTATION

  public static final io.netty.handler.codec.socks.SocksProtocolVersion UNKNOWN;
    descriptor: Lio/netty/handler/codec/socks/SocksProtocolVersion;
    flags: (0x4019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL, ACC_ANNOTATION

  private final byte b;
    descriptor: B
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private static final io.netty.handler.codec.socks.SocksProtocolVersion[] ENUM$VALUES;
    descriptor: [Lio/netty/handler/codec/socks/SocksProtocolVersion;
    flags: (0x101a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=5, locals=0, args_size=0
         0: .line 20
            new io.netty.handler.codec.socks.SocksProtocolVersion
            dup
            ldc "SOCKS4a"
            iconst_0
            iconst_4
            invokespecial io.netty.handler.codec.socks.SocksProtocolVersion.<init>:(Ljava/lang/String;IB)V
            putstatic io.netty.handler.codec.socks.SocksProtocolVersion.SOCKS4a:Lio/netty/handler/codec/socks/SocksProtocolVersion;
         1: .line 21
            new io.netty.handler.codec.socks.SocksProtocolVersion
            dup
            ldc "SOCKS5"
            iconst_1
            iconst_5
            invokespecial io.netty.handler.codec.socks.SocksProtocolVersion.<init>:(Ljava/lang/String;IB)V
            putstatic io.netty.handler.codec.socks.SocksProtocolVersion.SOCKS5:Lio/netty/handler/codec/socks/SocksProtocolVersion;
         2: .line 22
            new io.netty.handler.codec.socks.SocksProtocolVersion
            dup
            ldc "UNKNOWN"
            iconst_2
            iconst_m1
            invokespecial io.netty.handler.codec.socks.SocksProtocolVersion.<init>:(Ljava/lang/String;IB)V
            putstatic io.netty.handler.codec.socks.SocksProtocolVersion.UNKNOWN:Lio/netty/handler/codec/socks/SocksProtocolVersion;
         3: .line 19
            iconst_3
            anewarray io.netty.handler.codec.socks.SocksProtocolVersion
            dup
            iconst_0
            getstatic io.netty.handler.codec.socks.SocksProtocolVersion.SOCKS4a:Lio/netty/handler/codec/socks/SocksProtocolVersion;
            aastore
            dup
            iconst_1
            getstatic io.netty.handler.codec.socks.SocksProtocolVersion.SOCKS5:Lio/netty/handler/codec/socks/SocksProtocolVersion;
            aastore
            dup
            iconst_2
            getstatic io.netty.handler.codec.socks.SocksProtocolVersion.UNKNOWN:Lio/netty/handler/codec/socks/SocksProtocolVersion;
            aastore
            putstatic io.netty.handler.codec.socks.SocksProtocolVersion.ENUM$VALUES:[Lio/netty/handler/codec/socks/SocksProtocolVersion;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private void <init>(java.lang.String, int, byte);
    descriptor: (Ljava/lang/String;IB)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=4, args_size=4
        start local 0 // io.netty.handler.codec.socks.SocksProtocolVersion this
        start local 3 // byte b
         0: .line 26
            aload 0 /* this */
            aload 1
            iload 2
            invokespecial java.lang.Enum.<init>:(Ljava/lang/String;I)V
         1: .line 27
            aload 0 /* this */
            iload 3 /* b */
            putfield io.netty.handler.codec.socks.SocksProtocolVersion.b:B
         2: .line 28
            return
        end local 3 // byte b
        end local 0 // io.netty.handler.codec.socks.SocksProtocolVersion this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lio/netty/handler/codec/socks/SocksProtocolVersion;
            0    3     3     b  B
    MethodParameters:
               Name  Flags
      $enum$name     
      $enum$ordinal  
      b              

  public static io.netty.handler.codec.socks.SocksProtocolVersion fromByte(byte);
    descriptor: (B)Lio/netty/handler/codec/socks/SocksProtocolVersion;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // byte b
         0: .line 35
            iload 0 /* b */
            invokestatic io.netty.handler.codec.socks.SocksProtocolVersion.valueOf:(B)Lio/netty/handler/codec/socks/SocksProtocolVersion;
            areturn
        end local 0 // byte b
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0     b  B
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()
    MethodParameters:
      Name  Flags
      b     

  public static io.netty.handler.codec.socks.SocksProtocolVersion valueOf(byte);
    descriptor: (B)Lio/netty/handler/codec/socks/SocksProtocolVersion;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=5, args_size=1
        start local 0 // byte b
         0: .line 39
            invokestatic io.netty.handler.codec.socks.SocksProtocolVersion.values:()[Lio/netty/handler/codec/socks/SocksProtocolVersion;
            dup
            astore 4
            arraylength
            istore 3
            iconst_0
            istore 2
            goto 5
      StackMap locals: int top int int io.netty.handler.codec.socks.SocksProtocolVersion[]
      StackMap stack:
         1: aload 4
            iload 2
            aaload
            astore 1 /* code */
        start local 1 // io.netty.handler.codec.socks.SocksProtocolVersion code
         2: .line 40
            aload 1 /* code */
            getfield io.netty.handler.codec.socks.SocksProtocolVersion.b:B
            iload 0 /* b */
            if_icmpne 4
         3: .line 41
            aload 1 /* code */
            areturn
        end local 1 // io.netty.handler.codec.socks.SocksProtocolVersion code
         4: .line 39
      StackMap locals:
      StackMap stack:
            iinc 2 1
      StackMap locals:
      StackMap stack:
         5: iload 2
            iload 3
            if_icmplt 1
         6: .line 44
            getstatic io.netty.handler.codec.socks.SocksProtocolVersion.UNKNOWN:Lio/netty/handler/codec/socks/SocksProtocolVersion;
            areturn
        end local 0 // byte b
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0     b  B
            2    4     1  code  Lio/netty/handler/codec/socks/SocksProtocolVersion;
    MethodParameters:
      Name  Flags
      b     

  public byte byteValue();
    descriptor: ()B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.socks.SocksProtocolVersion this
         0: .line 48
            aload 0 /* this */
            getfield io.netty.handler.codec.socks.SocksProtocolVersion.b:B
            ireturn
        end local 0 // io.netty.handler.codec.socks.SocksProtocolVersion this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/socks/SocksProtocolVersion;

  public static io.netty.handler.codec.socks.SocksProtocolVersion[] values();
    descriptor: ()[Lio/netty/handler/codec/socks/SocksProtocolVersion;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=3, args_size=0
         0: .line 1
            getstatic io.netty.handler.codec.socks.SocksProtocolVersion.ENUM$VALUES:[Lio/netty/handler/codec/socks/SocksProtocolVersion;
            dup
            astore 0
            iconst_0
            aload 0
            arraylength
            dup
            istore 1
            anewarray io.netty.handler.codec.socks.SocksProtocolVersion
            dup
            astore 2
            iconst_0
            iload 1
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
            aload 2
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public static io.netty.handler.codec.socks.SocksProtocolVersion valueOf(java.lang.String);
    descriptor: (Ljava/lang/String;)Lio/netty/handler/codec/socks/SocksProtocolVersion;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
         0: .line 1
            ldc Lio/netty/handler/codec/socks/SocksProtocolVersion;
            aload 0
            invokestatic java.lang.Enum.valueOf:(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/Enum;
            checkcast io.netty.handler.codec.socks.SocksProtocolVersion
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    MethodParameters:
      Name  Flags
      name  
}
Signature: Ljava/lang/Enum<Lio/netty/handler/codec/socks/SocksProtocolVersion;>;
SourceFile: "SocksProtocolVersion.java"