1.0.0-beta25 (latest) 1.0.0-beta24

    public sealed class Assistant.Types.GenerationConfig.Types.SystemInstruction : IMessage<Assistant.Types.GenerationConfig.Types.SystemInstruction>, IEquatable<Assistant.Types.GenerationConfig.Types.SystemInstruction>, IDeepCloneable<Assistant.Types.GenerationConfig.Types.SystemInstruction>, IBufferMessage, IMessage

Reference documentation and code samples for the Discovery Engine v1beta API class Assistant.Types.GenerationConfig.Types.SystemInstruction.

System instruction, also known as the prompt preamble for LLM calls.

## Inheritance

[object](https://learn.microsoft.com/dotnet/api/system.object) \> Assistant.Types.GenerationConfig.Types.SystemInstruction

## Implements

[IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage-1.html)[Assistant](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant)[Types](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types)[GenerationConfig](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfig)[Types](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfig.Types)[SystemInstruction](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfig.Types.SystemInstruction), [IEquatable](https://learn.microsoft.com/dotnet/api/system.iequatable-1)[Assistant](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant)[Types](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types)[GenerationConfig](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfig)[Types](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfig.Types)[SystemInstruction](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfig.Types.SystemInstruction), [IDeepCloneable](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IDeepCloneable-1.html)[Assistant](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant)[Types](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types)[GenerationConfig](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfig)[Types](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfig.Types)[SystemInstruction](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfig.Types.SystemInstruction), [IBufferMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IBufferMessage.html), [IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage.html)

## Inherited Members

[object.GetHashCode()](https://learn.microsoft.com/dotnet/api/system.object.gethashcode) [object.GetType()](https://learn.microsoft.com/dotnet/api/system.object.gettype) [object.ToString()](https://learn.microsoft.com/dotnet/api/system.object.tostring)

## Namespace

[Google.Cloud.DiscoveryEngine.V1Beta](https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta)

## Assembly

Google.Cloud.DiscoveryEngine.V1Beta.dll

## Constructors

### SystemInstruction()

    public SystemInstruction()

### SystemInstruction(SystemInstruction)

    public SystemInstruction(Assistant.Types.GenerationConfig.Types.SystemInstruction other)

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `other` | `https://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistanthttps://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Typeshttps://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfighttps://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfig.Typeshttps://docs.cloud.google.com/dotnet/docs/reference/Google.Cloud.DiscoveryEngine.V1Beta/latest/Google.Cloud.DiscoveryEngine.V1Beta.Assistant.Types.GenerationConfig.Types.SystemInstruction` |

## Properties

### AdditionalSystemInstruction

    public string AdditionalSystemInstruction { get; set; }

Optional. Additional system instruction that will be added to the
default system instruction.

| **Property Value** ||
|---|---|
| **Type** | **Description** |
| `https://learn.microsoft.com/dotnet/api/system.string` |   |