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 abstract class io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord extends io.netty.handler.codec.dns.AbstractDnsRecord implements io.netty.handler.codec.dns.DnsOptPseudoRecord
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord
  super_class: io.netty.handler.codec.dns.AbstractDnsRecord
{
  protected void <init>(int, int, int);
    descriptor: (III)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=6, locals=4, args_size=4
        start local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
        start local 1 // int maxPayloadSize
        start local 2 // int extendedRcode
        start local 3 // int version
         0: .line 31
            aload 0 /* this */
            ldc ""
            getstatic io.netty.handler.codec.dns.DnsRecordType.OPT:Lio/netty/handler/codec/dns/DnsRecordType;
            iload 1 /* maxPayloadSize */
            iload 2 /* extendedRcode */
            iload 3 /* version */
            invokestatic io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord.packIntoLong:(II)J
            invokespecial io.netty.handler.codec.dns.AbstractDnsRecord.<init>:(Ljava/lang/String;Lio/netty/handler/codec/dns/DnsRecordType;IJ)V
         1: .line 32
            return
        end local 3 // int version
        end local 2 // int extendedRcode
        end local 1 // int maxPayloadSize
        end local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0    2     0            this  Lio/netty/handler/codec/dns/AbstractDnsOptPseudoRrRecord;
            0    2     1  maxPayloadSize  I
            0    2     2   extendedRcode  I
            0    2     3         version  I
    MethodParameters:
                Name  Flags
      maxPayloadSize  
      extendedRcode   
      version         

  protected void <init>(int);
    descriptor: (I)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=6, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
        start local 1 // int maxPayloadSize
         0: .line 35
            aload 0 /* this */
            ldc ""
            getstatic io.netty.handler.codec.dns.DnsRecordType.OPT:Lio/netty/handler/codec/dns/DnsRecordType;
            iload 1 /* maxPayloadSize */
            lconst_0
            invokespecial io.netty.handler.codec.dns.AbstractDnsRecord.<init>:(Ljava/lang/String;Lio/netty/handler/codec/dns/DnsRecordType;IJ)V
         1: .line 36
            return
        end local 1 // int maxPayloadSize
        end local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0    2     0            this  Lio/netty/handler/codec/dns/AbstractDnsOptPseudoRrRecord;
            0    2     1  maxPayloadSize  I
    MethodParameters:
                Name  Flags
      maxPayloadSize  

  private static long packIntoLong(int, int);
    descriptor: (II)J
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // int val
        start local 1 // int val2
         0: .line 41
            iload 0 /* val */
            sipush 255
            iand
            bipush 24
            ishl
            iload 1 /* val2 */
            sipush 255
            iand
            bipush 16
            ishl
            ior
            i2l
            ldc 4294967295
            land
            lreturn
        end local 1 // int val2
        end local 0 // int val
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0   val  I
            0    1     1  val2  I
    MethodParameters:
      Name  Flags
      val   
      val2  

  public int extendedRcode();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
         0: .line 46
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord.timeToLive:()J
            l2i
            bipush 24
            ishr
            sipush 255
            iand
            i2s
            ireturn
        end local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/dns/AbstractDnsOptPseudoRrRecord;

  public int version();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
         0: .line 51
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord.timeToLive:()J
            l2i
            bipush 16
            ishr
            sipush 255
            iand
            i2s
            ireturn
        end local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/dns/AbstractDnsOptPseudoRrRecord;

  public int flags();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
         0: .line 56
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord.timeToLive:()J
            l2i
            i2s
            sipush 255
            iand
            i2s
            ireturn
        end local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/dns/AbstractDnsOptPseudoRrRecord;

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
         0: .line 61
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord.toStringBuilder:()Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/dns/AbstractDnsOptPseudoRrRecord;

  final java.lang.StringBuilder toStringBuilder();
    descriptor: ()Ljava/lang/StringBuilder;
    flags: (0x0010) ACC_FINAL
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
         0: .line 65
            new java.lang.StringBuilder
            dup
            bipush 64
            invokespecial java.lang.StringBuilder.<init>:(I)V
         1: .line 66
            aload 0 /* this */
            invokestatic io.netty.util.internal.StringUtil.simpleClassName:(Ljava/lang/Object;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
         2: .line 67
            bipush 40
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
         3: .line 68
            ldc "OPT flags:"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
         4: .line 69
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord.flags:()I
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
         5: .line 70
            ldc " version:"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
         6: .line 71
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord.version:()I
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
         7: .line 72
            ldc " extendedRecode:"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
         8: .line 73
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord.extendedRcode:()I
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
         9: .line 74
            ldc " udp:"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
        10: .line 75
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord.dnsClass:()I
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
        11: .line 76
            bipush 41
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
        12: .line 65
            areturn
        end local 0 // io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   13     0  this  Lio/netty/handler/codec/dns/AbstractDnsOptPseudoRrRecord;
}
SourceFile: "AbstractDnsOptPseudoRrRecord.java"