https://github.com/datastax/native-protocol: A set of Java types representing the frames and messages of the Apache Cassandra® native protocol, with the associated serialization and deserialization logic (this is a third-party implementation, not related to the Apache Cassandra project)
  • Various (DataStax) 
public class com.datastax.oss.protocol.internal.response.Authenticate extends com.datastax.oss.protocol.internal.Message
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.datastax.oss.protocol.internal.response.Authenticate
  super_class: com.datastax.oss.protocol.internal.Message
{
  public final java.lang.String authenticator;
    descriptor: Ljava/lang/String;
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL

  public void <init>(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // com.datastax.oss.protocol.internal.response.Authenticate this
        start local 1 // java.lang.String authenticator
         0: .line 27
            aload 0 /* this */
            iconst_1
            iconst_3
            invokespecial com.datastax.oss.protocol.internal.Message.<init>:(ZI)V
         1: .line 28
            aload 0 /* this */
            aload 1 /* authenticator */
            putfield com.datastax.oss.protocol.internal.response.Authenticate.authenticator:Ljava/lang/String;
         2: .line 29
            return
        end local 1 // java.lang.String authenticator
        end local 0 // com.datastax.oss.protocol.internal.response.Authenticate this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    3     0           this  Lcom/datastax/oss/protocol/internal/response/Authenticate;
            0    3     1  authenticator  Ljava/lang/String;
    MethodParameters:
               Name  Flags
      authenticator  

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.datastax.oss.protocol.internal.response.Authenticate this
         0: .line 33
            ldc "AUTHENTICATE"
            areturn
        end local 0 // com.datastax.oss.protocol.internal.response.Authenticate this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/datastax/oss/protocol/internal/response/Authenticate;
}
SourceFile: "Authenticate.java"
NestMembers:
  com.datastax.oss.protocol.internal.response.Authenticate$Codec
InnerClasses:
  public Codec = com.datastax.oss.protocol.internal.response.Authenticate$Codec of com.datastax.oss.protocol.internal.response.Authenticate