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.resolver.dns.DnsServerAddresses
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: io.netty.resolver.dns.DnsServerAddresses
  super_class: java.lang.Object
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.resolver.dns.DnsServerAddresses this
         0: .line 33
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // io.netty.resolver.dns.DnsServerAddresses this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/resolver/dns/DnsServerAddresses;

  public static java.util.List<java.net.InetSocketAddress> defaultAddressList();
    descriptor: ()Ljava/util/List;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 43
            invokestatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.defaultAddressList:()Ljava/util/List;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    Signature: ()Ljava/util/List<Ljava/net/InetSocketAddress;>;
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()

  public static io.netty.resolver.dns.DnsServerAddresses defaultAddresses();
    descriptor: ()Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 61
            invokestatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.defaultAddresses:()Lio/netty/resolver/dns/DnsServerAddresses;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()

  public static io.netty.resolver.dns.DnsServerAddresses sequential(java.lang.Iterable<? extends java.net.InetSocketAddress>);
    descriptor: (Ljava/lang/Iterable;)Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // java.lang.Iterable addresses
         0: .line 69
            aload 0 /* addresses */
            invokestatic io.netty.resolver.dns.DnsServerAddresses.sanitize:(Ljava/lang/Iterable;)[Ljava/net/InetSocketAddress;
            invokestatic io.netty.resolver.dns.DnsServerAddresses.sequential0:([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
            areturn
        end local 0 // java.lang.Iterable addresses
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0  addresses  Ljava/lang/Iterable<+Ljava/net/InetSocketAddress;>;
    Signature: (Ljava/lang/Iterable<+Ljava/net/InetSocketAddress;>;)Lio/netty/resolver/dns/DnsServerAddresses;
    MethodParameters:
           Name  Flags
      addresses  

  public static io.netty.resolver.dns.DnsServerAddresses sequential(java.net.InetSocketAddress[]);
    descriptor: ([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x0089) ACC_PUBLIC, ACC_STATIC, ACC_VARARGS
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // java.net.InetSocketAddress[] addresses
         0: .line 77
            aload 0 /* addresses */
            invokestatic io.netty.resolver.dns.DnsServerAddresses.sanitize:([Ljava/net/InetSocketAddress;)[Ljava/net/InetSocketAddress;
            invokestatic io.netty.resolver.dns.DnsServerAddresses.sequential0:([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
            areturn
        end local 0 // java.net.InetSocketAddress[] addresses
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0  addresses  [Ljava/net/InetSocketAddress;
    MethodParameters:
           Name  Flags
      addresses  

  private static io.netty.resolver.dns.DnsServerAddresses sequential0(java.net.InetSocketAddress[]);
    descriptor: ([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x008a) ACC_PRIVATE, ACC_STATIC, ACC_VARARGS
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // java.net.InetSocketAddress[] addresses
         0: .line 81
            aload 0 /* addresses */
            arraylength
            iconst_1
            if_icmpne 2
         1: .line 82
            aload 0 /* addresses */
            iconst_0
            aaload
            invokestatic io.netty.resolver.dns.DnsServerAddresses.singleton:(Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
            areturn
         2: .line 85
      StackMap locals:
      StackMap stack:
            new io.netty.resolver.dns.DnsServerAddresses$1
            dup
            ldc "sequential"
            aload 0 /* addresses */
            invokespecial io.netty.resolver.dns.DnsServerAddresses$1.<init>:(Ljava/lang/String;[Ljava/net/InetSocketAddress;)V
            areturn
        end local 0 // java.net.InetSocketAddress[] addresses
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    3     0  addresses  [Ljava/net/InetSocketAddress;
    MethodParameters:
           Name  Flags
      addresses  final

  public static io.netty.resolver.dns.DnsServerAddresses shuffled(java.lang.Iterable<? extends java.net.InetSocketAddress>);
    descriptor: (Ljava/lang/Iterable;)Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // java.lang.Iterable addresses
         0: .line 98
            aload 0 /* addresses */
            invokestatic io.netty.resolver.dns.DnsServerAddresses.sanitize:(Ljava/lang/Iterable;)[Ljava/net/InetSocketAddress;
            invokestatic io.netty.resolver.dns.DnsServerAddresses.shuffled0:([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
            areturn
        end local 0 // java.lang.Iterable addresses
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0  addresses  Ljava/lang/Iterable<+Ljava/net/InetSocketAddress;>;
    Signature: (Ljava/lang/Iterable<+Ljava/net/InetSocketAddress;>;)Lio/netty/resolver/dns/DnsServerAddresses;
    MethodParameters:
           Name  Flags
      addresses  

  public static io.netty.resolver.dns.DnsServerAddresses shuffled(java.net.InetSocketAddress[]);
    descriptor: ([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x0089) ACC_PUBLIC, ACC_STATIC, ACC_VARARGS
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // java.net.InetSocketAddress[] addresses
         0: .line 106
            aload 0 /* addresses */
            invokestatic io.netty.resolver.dns.DnsServerAddresses.sanitize:([Ljava/net/InetSocketAddress;)[Ljava/net/InetSocketAddress;
            invokestatic io.netty.resolver.dns.DnsServerAddresses.shuffled0:([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
            areturn
        end local 0 // java.net.InetSocketAddress[] addresses
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0  addresses  [Ljava/net/InetSocketAddress;
    MethodParameters:
           Name  Flags
      addresses  

  private static io.netty.resolver.dns.DnsServerAddresses shuffled0(java.net.InetSocketAddress[]);
    descriptor: ([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // java.net.InetSocketAddress[] addresses
         0: .line 110
            aload 0 /* addresses */
            arraylength
            iconst_1
            if_icmpne 2
         1: .line 111
            aload 0 /* addresses */
            iconst_0
            aaload
            invokestatic io.netty.resolver.dns.DnsServerAddresses.singleton:(Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
            areturn
         2: .line 114
      StackMap locals:
      StackMap stack:
            new io.netty.resolver.dns.DnsServerAddresses$2
            dup
            ldc "shuffled"
            aload 0 /* addresses */
            invokespecial io.netty.resolver.dns.DnsServerAddresses$2.<init>:(Ljava/lang/String;[Ljava/net/InetSocketAddress;)V
            areturn
        end local 0 // java.net.InetSocketAddress[] addresses
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    3     0  addresses  [Ljava/net/InetSocketAddress;
    MethodParameters:
           Name  Flags
      addresses  final

  public static io.netty.resolver.dns.DnsServerAddresses rotational(java.lang.Iterable<? extends java.net.InetSocketAddress>);
    descriptor: (Ljava/lang/Iterable;)Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // java.lang.Iterable addresses
         0: .line 129
            aload 0 /* addresses */
            invokestatic io.netty.resolver.dns.DnsServerAddresses.sanitize:(Ljava/lang/Iterable;)[Ljava/net/InetSocketAddress;
            invokestatic io.netty.resolver.dns.DnsServerAddresses.rotational0:([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
            areturn
        end local 0 // java.lang.Iterable addresses
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0  addresses  Ljava/lang/Iterable<+Ljava/net/InetSocketAddress;>;
    Signature: (Ljava/lang/Iterable<+Ljava/net/InetSocketAddress;>;)Lio/netty/resolver/dns/DnsServerAddresses;
    MethodParameters:
           Name  Flags
      addresses  

  public static io.netty.resolver.dns.DnsServerAddresses rotational(java.net.InetSocketAddress[]);
    descriptor: ([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x0089) ACC_PUBLIC, ACC_STATIC, ACC_VARARGS
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // java.net.InetSocketAddress[] addresses
         0: .line 139
            aload 0 /* addresses */
            invokestatic io.netty.resolver.dns.DnsServerAddresses.sanitize:([Ljava/net/InetSocketAddress;)[Ljava/net/InetSocketAddress;
            invokestatic io.netty.resolver.dns.DnsServerAddresses.rotational0:([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
            areturn
        end local 0 // java.net.InetSocketAddress[] addresses
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0  addresses  [Ljava/net/InetSocketAddress;
    MethodParameters:
           Name  Flags
      addresses  

  private static io.netty.resolver.dns.DnsServerAddresses rotational0(java.net.InetSocketAddress[]);
    descriptor: ([Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // java.net.InetSocketAddress[] addresses
         0: .line 143
            aload 0 /* addresses */
            arraylength
            iconst_1
            if_icmpne 2
         1: .line 144
            aload 0 /* addresses */
            iconst_0
            aaload
            invokestatic io.netty.resolver.dns.DnsServerAddresses.singleton:(Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
            areturn
         2: .line 147
      StackMap locals:
      StackMap stack:
            new io.netty.resolver.dns.RotationalDnsServerAddresses
            dup
            aload 0 /* addresses */
            invokespecial io.netty.resolver.dns.RotationalDnsServerAddresses.<init>:([Ljava/net/InetSocketAddress;)V
            areturn
        end local 0 // java.net.InetSocketAddress[] addresses
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    3     0  addresses  [Ljava/net/InetSocketAddress;
    MethodParameters:
           Name  Flags
      addresses  final

  public static io.netty.resolver.dns.DnsServerAddresses singleton(java.net.InetSocketAddress);
    descriptor: (Ljava/net/InetSocketAddress;)Lio/netty/resolver/dns/DnsServerAddresses;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // java.net.InetSocketAddress address
         0: .line 154
            aload 0 /* address */
            ifnonnull 2
         1: .line 155
            new java.lang.NullPointerException
            dup
            ldc "address"
            invokespecial java.lang.NullPointerException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 157
      StackMap locals:
      StackMap stack:
            aload 0 /* address */
            invokevirtual java.net.InetSocketAddress.isUnresolved:()Z
            ifeq 4
         3: .line 158
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "cannot use an unresolved DNS server address: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* address */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         4: .line 161
      StackMap locals:
      StackMap stack:
            new io.netty.resolver.dns.SingletonDnsServerAddresses
            dup
            aload 0 /* address */
            invokespecial io.netty.resolver.dns.SingletonDnsServerAddresses.<init>:(Ljava/net/InetSocketAddress;)V
            areturn
        end local 0 // java.net.InetSocketAddress address
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    5     0  address  Ljava/net/InetSocketAddress;
    MethodParameters:
         Name  Flags
      address  final

  private static java.net.InetSocketAddress[] sanitize(java.lang.Iterable<? extends java.net.InetSocketAddress>);
    descriptor: (Ljava/lang/Iterable;)[Ljava/net/InetSocketAddress;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=4, args_size=1
        start local 0 // java.lang.Iterable addresses
         0: .line 165
            aload 0 /* addresses */
            ifnonnull 2
         1: .line 166
            new java.lang.NullPointerException
            dup
            ldc "addresses"
            invokespecial java.lang.NullPointerException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 170
      StackMap locals:
      StackMap stack:
            aload 0 /* addresses */
            instanceof java.util.Collection
            ifeq 5
         3: .line 171
            new java.util.ArrayList
            dup
            aload 0 /* addresses */
            checkcast java.util.Collection
            invokeinterface java.util.Collection.size:()I
            invokespecial java.util.ArrayList.<init>:(I)V
            astore 1 /* list */
        start local 1 // java.util.List list
         4: .line 172
            goto 6
        end local 1 // java.util.List list
         5: .line 173
      StackMap locals:
      StackMap stack:
            new java.util.ArrayList
            dup
            iconst_4
            invokespecial java.util.ArrayList.<init>:(I)V
            astore 1 /* list */
        start local 1 // java.util.List list
         6: .line 176
      StackMap locals: java.util.List
      StackMap stack:
            aload 0 /* addresses */
            invokeinterface java.lang.Iterable.iterator:()Ljava/util/Iterator;
            astore 3
            goto 13
      StackMap locals: java.lang.Iterable java.util.List top java.util.Iterator
      StackMap stack:
         7: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.net.InetSocketAddress
            astore 2 /* a */
        start local 2 // java.net.InetSocketAddress a
         8: .line 177
            aload 2 /* a */
            ifnonnull 10
         9: .line 178
            goto 14
        10: .line 180
      StackMap locals: java.lang.Iterable java.util.List java.net.InetSocketAddress java.util.Iterator
      StackMap stack:
            aload 2 /* a */
            invokevirtual java.net.InetSocketAddress.isUnresolved:()Z
            ifeq 12
        11: .line 181
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "cannot use an unresolved DNS server address: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 2 /* a */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        12: .line 183
      StackMap locals:
      StackMap stack:
            aload 1 /* list */
            aload 2 /* a */
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
        end local 2 // java.net.InetSocketAddress a
        13: .line 176
      StackMap locals: java.lang.Iterable java.util.List top java.util.Iterator
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 7
        14: .line 186
      StackMap locals: java.lang.Iterable java.util.List
      StackMap stack:
            aload 1 /* list */
            invokeinterface java.util.List.isEmpty:()Z
            ifeq 16
        15: .line 187
            new java.lang.IllegalArgumentException
            dup
            ldc "empty addresses"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        16: .line 190
      StackMap locals:
      StackMap stack:
            aload 1 /* list */
            aload 1 /* list */
            invokeinterface java.util.List.size:()I
            anewarray java.net.InetSocketAddress
            invokeinterface java.util.List.toArray:([Ljava/lang/Object;)[Ljava/lang/Object;
            checkcast java.net.InetSocketAddress[]
            areturn
        end local 1 // java.util.List list
        end local 0 // java.lang.Iterable addresses
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   17     0  addresses  Ljava/lang/Iterable<+Ljava/net/InetSocketAddress;>;
            4    5     1       list  Ljava/util/List<Ljava/net/InetSocketAddress;>;
            6   17     1       list  Ljava/util/List<Ljava/net/InetSocketAddress;>;
            8   13     2          a  Ljava/net/InetSocketAddress;
    Signature: (Ljava/lang/Iterable<+Ljava/net/InetSocketAddress;>;)[Ljava/net/InetSocketAddress;
    MethodParameters:
           Name  Flags
      addresses  

  private static java.net.InetSocketAddress[] sanitize(java.net.InetSocketAddress[]);
    descriptor: ([Ljava/net/InetSocketAddress;)[Ljava/net/InetSocketAddress;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=6, args_size=1
        start local 0 // java.net.InetSocketAddress[] addresses
         0: .line 194
            aload 0 /* addresses */
            ifnonnull 2
         1: .line 195
            new java.lang.NullPointerException
            dup
            ldc "addresses"
            invokespecial java.lang.NullPointerException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 198
      StackMap locals:
      StackMap stack:
            new java.util.ArrayList
            dup
            aload 0 /* addresses */
            arraylength
            invokespecial java.util.ArrayList.<init>:(I)V
            astore 1 /* list */
        start local 1 // java.util.List list
         3: .line 199
            aload 0 /* addresses */
            dup
            astore 5
            arraylength
            istore 4
            iconst_0
            istore 3
            goto 11
      StackMap locals: java.net.InetSocketAddress[] java.util.List top int int java.net.InetSocketAddress[]
      StackMap stack:
         4: aload 5
            iload 3
            aaload
            astore 2 /* a */
        start local 2 // java.net.InetSocketAddress a
         5: .line 200
            aload 2 /* a */
            ifnonnull 7
         6: .line 201
            goto 12
         7: .line 203
      StackMap locals: java.net.InetSocketAddress[] java.util.List java.net.InetSocketAddress int int java.net.InetSocketAddress[]
      StackMap stack:
            aload 2 /* a */
            invokevirtual java.net.InetSocketAddress.isUnresolved:()Z
            ifeq 9
         8: .line 204
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "cannot use an unresolved DNS server address: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 2 /* a */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         9: .line 206
      StackMap locals:
      StackMap stack:
            aload 1 /* list */
            aload 2 /* a */
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
        end local 2 // java.net.InetSocketAddress a
        10: .line 199
            iinc 3 1
      StackMap locals: java.net.InetSocketAddress[] java.util.List top int int java.net.InetSocketAddress[]
      StackMap stack:
        11: iload 3
            iload 4
            if_icmplt 4
        12: .line 209
      StackMap locals: java.net.InetSocketAddress[] java.util.List
      StackMap stack:
            aload 1 /* list */
            invokeinterface java.util.List.isEmpty:()Z
            ifeq 14
        13: .line 210
            invokestatic io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.defaultAddressArray:()[Ljava/net/InetSocketAddress;
            areturn
        14: .line 213
      StackMap locals:
      StackMap stack:
            aload 1 /* list */
            aload 1 /* list */
            invokeinterface java.util.List.size:()I
            anewarray java.net.InetSocketAddress
            invokeinterface java.util.List.toArray:([Ljava/lang/Object;)[Ljava/lang/Object;
            checkcast java.net.InetSocketAddress[]
            areturn
        end local 1 // java.util.List list
        end local 0 // java.net.InetSocketAddress[] addresses
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   15     0  addresses  [Ljava/net/InetSocketAddress;
            3   15     1       list  Ljava/util/List<Ljava/net/InetSocketAddress;>;
            5   10     2          a  Ljava/net/InetSocketAddress;
    MethodParameters:
           Name  Flags
      addresses  

  public abstract io.netty.resolver.dns.DnsServerAddressStream stream();
    descriptor: ()Lio/netty/resolver/dns/DnsServerAddressStream;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "DnsServerAddresses.java"
NestMembers:
  io.netty.resolver.dns.DnsServerAddresses$1  io.netty.resolver.dns.DnsServerAddresses$2
InnerClasses:
  io.netty.resolver.dns.DnsServerAddresses$1
  io.netty.resolver.dns.DnsServerAddresses$2