Map Processor for Karcero to remove corridors with less than X cells

CorridorCleaner.cs

using Karcero.Engine.Contracts;
using Karcero.Engine.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Karcero.Visualizer
{
    public class CorridorCleaner : IMapProcessor<Cell>
    {
        public int MinCorridorLength { get; set; }

        public CorridorCleaner(int minCorridorLength = 3)
        {
            MinCorridorLength = minCorridorLength;
        }

        public void ProcessMap(Map<Cell> map, DungeonConfiguration configuration, IRandomizer randomizer)
        {
            map.AllCells
                .Where(cell => IsDeadEnd(cell, map))
                .Select(cell => BuildCorridor(cell, map))
                .Where(c => c.Count < MinCorridorLength)
                .ToList()
                .ForEach(ClearCorridor);
        }

        private void ClearCorridor(List<Cell> corridor)
        {
            corridor.ForEach(cell => cell.Terrain = TerrainType.Rock);
        }

        private List<Cell> BuildCorridor(Cell cell, Map<Cell> map)
        {
            var corridor = new List<Cell>();
            var currentCell = cell;
            do
            {
                var possibleCells = map.GetAllAdjacentCells(currentCell)
                    .Where(c => !corridor.Contains(c) && c.Terrain != TerrainType.Rock);
                if (possibleCells.Count() == 1)
                {
                    corridor.Add(currentCell);
                    currentCell = possibleCells.First();
                }
                else
                {
                    currentCell = null;
                }
            }
            while (currentCell != null);
            return corridor;
        }

        private bool IsDeadEnd(Cell cell, Map<Cell> map)
        {
            return cell.Terrain != TerrainType.Rock &&
                   map.GetAllAdjacentCells(cell).Count(neighbour => neighbour.Terrain != TerrainType.Rock) == 1;
        }


    }
}

Example.cs

var generator = new DungeonGenerator<Cell>();
generator.AddMapProcessor(new CorridorCleaner());