agent-framework/dotnet/src/Microsoft.Agents.AI.Workflows.Declarative/CodeGen/CopyConversationMessagesTemplate.tt

<#@ template language="C#" inherits="ActionTemplate" visibility="internal" linePragmas="false" #>
<#@ output extension=".cs" #>
<#@ assembly name="System.Core" #>
<#@ import namespace="Microsoft.Agents.ObjectModel" #>
<#@ import namespace="Microsoft.Extensions.AI" #>
<#@ include file="Snippets/AssignVariableTemplate.tt" once="true" #>
<#@ include file="Snippets/EvaluateStringExpressionTemplate.tt" once="true" #>
<#@ include file="Snippets/EvaluateValueExpressionTemplate.tt" once="true" #>
/// <summary>
/// Copies one or more messages into the specified agent conversation.
/// </summary>
internal sealed class <#= this.Name #>Executor(FormulaSession session, ResponseAgentProvider agentProvider) : ActionExecutor(id: "<#= this.Id #>", session)
{
    // <inheritdoc />
    protected override async ValueTask<object?> ExecuteAsync(IWorkflowContext context, CancellationToken cancellationToken)
    {<#
        EvaluateStringExpression(this.Model.ConversationId, "conversationId", isNullable: true); #>
        if (string.IsNullOrWhiteSpace(conversationId))
        {
            throw new DeclarativeActionException($"Conversation identifier must be defined: {this.Id}");
        }<#
        EvaluateValueExpression<ChatMessage[]>(this.Model.Messages, "messages");
        #>
        if (messages is not null)
        {
            foreach (ChatMessage message in messages)
            {
                await agentProvider.CreateMessageAsync(conversationId, message, cancellationToken).ConfigureAwait(false);
            }
        }
        return default;
    }
}