Ombi/src/Ombi.Store/Entities/PlexEpisode.cs

using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;

namespace Ombi.Store.Entities
{
    [Table("PlexEpisode")]
    public class PlexEpisode : MediaServerEpisode
    {
        public string Key { get; set; } // RatingKey
        /// <value>
        /// The parent key.
        /// </value>
        public string ParentKey { get; set; }
        /// <value>
        /// The grandparent key.
        /// </value>
        public string GrandparentKey { get; set; }
        [NotMapped]
        public PlexServerContent PlexSeries
        {
            get => (PlexServerContent)Series;
            set => Series = value;
        }

        public override IMediaServerContent SeriesIsIn(ICollection<IMediaServerContent> content)
        {
            return content.OfType<PlexServerContent>().FirstOrDefault(
                 x => x.Key == this.PlexSeries.Key);
        }
    }
}