PKHeX/PKHeX.Core/PKM/Shared/IGeneration.cs

namespace PKHeX.Core
{
    /// <summary>
    /// Interface that exposes a <see cref="Generation"/> to see which canonical generation the data originated in.
    /// </summary>
    public interface IGeneration
    {
        /// <summary>
        /// The canonical generation the data originated in.
        /// </summary>
        int Generation { get; }
    }
}