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.Error 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.Error
  super_class: com.datastax.oss.protocol.internal.Message
{
  public final int code;
    descriptor: I
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL

  public final java.lang.String message;
    descriptor: Ljava/lang/String;
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL

  public void <init>(int, java.lang.String);
    descriptor: (ILjava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.datastax.oss.protocol.internal.response.Error this
        start local 1 // int code
        start local 2 // java.lang.String message
         0: .line 47
            aload 0 /* this */
            iconst_1
            iconst_0
            invokespecial com.datastax.oss.protocol.internal.Message.<init>:(ZI)V
         1: .line 48
            aload 0 /* this */
            iload 1 /* code */
            putfield com.datastax.oss.protocol.internal.response.Error.code:I
         2: .line 49
            aload 0 /* this */
            aload 2 /* message */
            putfield com.datastax.oss.protocol.internal.response.Error.message:Ljava/lang/String;
         3: .line 50
            return
        end local 2 // java.lang.String message
        end local 1 // int code
        end local 0 // com.datastax.oss.protocol.internal.response.Error this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lcom/datastax/oss/protocol/internal/response/Error;
            0    4     1     code  I
            0    4     2  message  Ljava/lang/String;
    MethodParameters:
         Name  Flags
      code     
      message  

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.datastax.oss.protocol.internal.response.Error this
         0: .line 54
            new java.lang.StringBuilder
            dup
            ldc "ERROR("
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield com.datastax.oss.protocol.internal.response.Error.message:Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc ")"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 0 // com.datastax.oss.protocol.internal.response.Error this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/datastax/oss/protocol/internal/response/Error;
}
SourceFile: "Error.java"
NestMembers:
  com.datastax.oss.protocol.internal.response.Error$Codec  com.datastax.oss.protocol.internal.response.Error$SingleMessageSubCodec  com.datastax.oss.protocol.internal.response.Error$SubCodec
InnerClasses:
  public Codec = com.datastax.oss.protocol.internal.response.Error$Codec of com.datastax.oss.protocol.internal.response.Error
  public SingleMessageSubCodec = com.datastax.oss.protocol.internal.response.Error$SingleMessageSubCodec of com.datastax.oss.protocol.internal.response.Error
  public abstract SubCodec = com.datastax.oss.protocol.internal.response.Error$SubCodec of com.datastax.oss.protocol.internal.response.Error