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) 
final class io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList
  super_class: java.lang.Object
{
  private final java.lang.String questionName;
    descriptor: Ljava/lang/String;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer head;
    descriptor: Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
    flags: (0x0002) ACC_PRIVATE

  private int count;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  void <init>(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList this
        start local 1 // java.lang.String questionName
         0: .line 791
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 792
            aload 0 /* this */
            aload 1 /* questionName */
            getstatic java.util.Locale.US:Ljava/util/Locale;
            invokevirtual java.lang.String.toLowerCase:(Ljava/util/Locale;)Ljava/lang/String;
            putfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.questionName:Ljava/lang/String;
         2: .line 793
            return
        end local 1 // java.lang.String questionName
        end local 0 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    3     0          this  Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServerList;
            0    3     1  questionName  Ljava/lang/String;
    MethodParameters:
              Name  Flags
      questionName  

  void add(io.netty.handler.codec.dns.DnsRecord);
    descriptor: (Lio/netty/handler/codec/dns/DnsRecord;)V
    flags: (0x0000) 
    Code:
      stack=6, locals=7, args_size=2
        start local 0 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList this
        start local 1 // io.netty.handler.codec.dns.DnsRecord r
         0: .line 796
            aload 1 /* r */
            invokeinterface io.netty.handler.codec.dns.DnsRecord.type:()Lio/netty/handler/codec/dns/DnsRecordType;
            getstatic io.netty.handler.codec.dns.DnsRecordType.NS:Lio/netty/handler/codec/dns/DnsRecordType;
            if_acmpne 1
            aload 1 /* r */
            instanceof io.netty.handler.codec.dns.DnsRawRecord
            ifne 2
         1: .line 797
      StackMap locals:
      StackMap stack:
            return
         2: .line 801
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.questionName:Ljava/lang/String;
            invokevirtual java.lang.String.length:()I
            aload 1 /* r */
            invokeinterface io.netty.handler.codec.dns.DnsRecord.name:()Ljava/lang/String;
            invokevirtual java.lang.String.length:()I
            if_icmpge 4
         3: .line 802
            return
         4: .line 805
      StackMap locals:
      StackMap stack:
            aload 1 /* r */
            invokeinterface io.netty.handler.codec.dns.DnsRecord.name:()Ljava/lang/String;
            getstatic java.util.Locale.US:Ljava/util/Locale;
            invokevirtual java.lang.String.toLowerCase:(Ljava/util/Locale;)Ljava/lang/String;
            astore 2 /* recordName */
        start local 2 // java.lang.String recordName
         5: .line 807
            iconst_0
            istore 3 /* dots */
        start local 3 // int dots
         6: .line 808
            aload 2 /* recordName */
            invokevirtual java.lang.String.length:()I
            iconst_1
            isub
            istore 4 /* a */
        start local 4 // int a
         7: aload 0 /* this */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.questionName:Ljava/lang/String;
            invokevirtual java.lang.String.length:()I
            iconst_1
            isub
            istore 5 /* b */
        start local 5 // int b
         8: goto 15
         9: .line 809
      StackMap locals: io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList io.netty.handler.codec.dns.DnsRecord java.lang.String int int int
      StackMap stack:
            aload 2 /* recordName */
            iload 4 /* a */
            invokevirtual java.lang.String.charAt:(I)C
            istore 6 /* c */
        start local 6 // char c
        10: .line 810
            aload 0 /* this */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.questionName:Ljava/lang/String;
            iload 5 /* b */
            invokevirtual java.lang.String.charAt:(I)C
            iload 6 /* c */
            if_icmpeq 12
        11: .line 811
            return
        12: .line 813
      StackMap locals: int
      StackMap stack:
            iload 6 /* c */
            bipush 46
            if_icmpne 14
        13: .line 814
            iinc 3 /* dots */ 1
        end local 6 // char c
        14: .line 808
      StackMap locals:
      StackMap stack:
            iinc 4 /* a */ -1
            iinc 5 /* b */ -1
      StackMap locals:
      StackMap stack:
        15: iload 4 /* a */
            ifge 9
        end local 5 // int b
        end local 4 // int a
        16: .line 818
            aload 0 /* this */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.head:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
            ifnull 18
            aload 0 /* this */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.head:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.dots:I
            iload 3 /* dots */
            if_icmple 18
        17: .line 820
            return
        18: .line 823
      StackMap locals:
      StackMap stack:
            aload 1 /* r */
            checkcast io.netty.buffer.ByteBufHolder
            invokeinterface io.netty.buffer.ByteBufHolder.content:()Lio/netty/buffer/ByteBuf;
            astore 4 /* recordContent */
        start local 4 // io.netty.buffer.ByteBuf recordContent
        19: .line 824
            aload 4 /* recordContent */
            invokestatic io.netty.resolver.dns.DnsResolveContext.decodeDomainName:(Lio/netty/buffer/ByteBuf;)Ljava/lang/String;
            astore 5 /* domainName */
        start local 5 // java.lang.String domainName
        20: .line 825
            aload 5 /* domainName */
            ifnonnull 22
        21: .line 827
            return
        22: .line 832
      StackMap locals: io.netty.buffer.ByteBuf java.lang.String
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.head:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
            ifnull 23
            aload 0 /* this */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.head:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.dots:I
            iload 3 /* dots */
            if_icmpge 26
        23: .line 833
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iconst_1
            putfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.count:I
        24: .line 834
            aload 0 /* this */
            new io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer
            dup
            iload 3 /* dots */
            aload 2 /* recordName */
            aload 5 /* domainName */
            invokespecial io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.<init>:(ILjava/lang/String;Ljava/lang/String;)V
            putfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.head:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
        25: .line 835
            goto 33
      StackMap locals:
      StackMap stack:
        26: aload 0 /* this */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.head:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.dots:I
            iload 3 /* dots */
            if_icmpne 33
        27: .line 836
            aload 0 /* this */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.head:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
            astore 6 /* serverName */
        start local 6 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer serverName
        28: .line 837
            goto 30
        29: .line 838
      StackMap locals: io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer
      StackMap stack:
            aload 6 /* serverName */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.next:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
            astore 6 /* serverName */
        30: .line 837
      StackMap locals:
      StackMap stack:
            aload 6 /* serverName */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.next:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
            ifnonnull 29
        31: .line 840
            aload 6 /* serverName */
            new io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer
            dup
            iload 3 /* dots */
            aload 2 /* recordName */
            aload 5 /* domainName */
            invokespecial io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.<init>:(ILjava/lang/String;Ljava/lang/String;)V
            putfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.next:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
        32: .line 841
            aload 0 /* this */
            dup
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.count:I
            iconst_1
            iadd
            putfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.count:I
        end local 6 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer serverName
        33: .line 843
      StackMap locals:
      StackMap stack:
            return
        end local 5 // java.lang.String domainName
        end local 4 // io.netty.buffer.ByteBuf recordContent
        end local 3 // int dots
        end local 2 // java.lang.String recordName
        end local 1 // io.netty.handler.codec.dns.DnsRecord r
        end local 0 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0   34     0           this  Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServerList;
            0   34     1              r  Lio/netty/handler/codec/dns/DnsRecord;
            5   34     2     recordName  Ljava/lang/String;
            6   34     3           dots  I
            7   16     4              a  I
            8   16     5              b  I
           10   14     6              c  C
           19   34     4  recordContent  Lio/netty/buffer/ByteBuf;
           20   34     5     domainName  Ljava/lang/String;
           28   33     6     serverName  Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
    MethodParameters:
      Name  Flags
      r     

  io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer remove(java.lang.String);
    descriptor: (Ljava/lang/String;)Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList this
        start local 1 // java.lang.String nsName
         0: .line 848
            aload 0 /* this */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.head:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
            astore 2 /* serverName */
        start local 2 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer serverName
         1: .line 850
            goto 6
         2: .line 851
      StackMap locals: io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer
      StackMap stack:
            aload 2 /* serverName */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.removed:Z
            ifne 5
            aload 2 /* serverName */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.nsName:Ljava/lang/String;
            aload 1 /* nsName */
            invokevirtual java.lang.String.equalsIgnoreCase:(Ljava/lang/String;)Z
            ifeq 5
         3: .line 852
            aload 2 /* serverName */
            iconst_1
            putfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.removed:Z
         4: .line 853
            aload 2 /* serverName */
            areturn
         5: .line 855
      StackMap locals:
      StackMap stack:
            aload 2 /* serverName */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer.next:Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
            astore 2 /* serverName */
         6: .line 850
      StackMap locals:
      StackMap stack:
            aload 2 /* serverName */
            ifnonnull 2
         7: .line 857
            aconst_null
            areturn
        end local 2 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer serverName
        end local 1 // java.lang.String nsName
        end local 0 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    8     0        this  Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServerList;
            0    8     1      nsName  Ljava/lang/String;
            1    8     2  serverName  Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServer;
    MethodParameters:
        Name  Flags
      nsName  

  int size();
    descriptor: ()I
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList this
         0: .line 861
            aload 0 /* this */
            getfield io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList.count:I
            ireturn
        end local 0 // io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/resolver/dns/DnsResolveContext$AuthoritativeNameServerList;
}
SourceFile: "DnsResolveContext.java"
NestHost: io.netty.resolver.dns.DnsResolveContext
InnerClasses:
  final AuthoritativeNameServer = io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServer of io.netty.resolver.dns.DnsResolveContext
  private final AuthoritativeNameServerList = io.netty.resolver.dns.DnsResolveContext$AuthoritativeNameServerList of io.netty.resolver.dns.DnsResolveContext