spectre.console/src/Spectre.Console/Live/Progress/ProgressRenderer.cs

using System;
using System.Collections.Generic;
using Spectre.Console.Rendering;

namespace Spectre.Console;

internal abstract class ProgressRenderer : IRenderHook
{
    public abstract TimeSpan RefreshRate { get; }

    public virtual void Started()
    {
    }

    public virtual void Completed(bool clear)
    {
    }

    public abstract void Update(ProgressContext context);
    public abstract IEnumerable<IRenderable> Process(RenderContext context, IEnumerable<IRenderable> renderables);
}