CompiledHandlebars.Compiler.CodeGeneration.CompilationState.GetQueryElements C# (CSharp) Method

    private List<string> GetQueryElements(Context lastCheckedContext, Context contextToCheck)
    {//Items -> ItemsTitle
      var resultList = new List<string>();      
      var lastCheckedElements = lastCheckedContext?.FullPath.Split('.') ?? new string[0];
      var pathToCheckElements = contextToCheck.FullPath.Split('.');        
      List<string> relevantElements = new List<string>();
      List<string> prefixElements = new List<string>();
      if (lastCheckedElements.Any())
      {
        int i = 0;
        for (i = 0; i < Math.Min(lastCheckedElements.Length, pathToCheckElements.Length); i++)
        {
          if (lastCheckedElements[i].Equals(pathToCheckElements[i]))
            prefixElements.Add(lastCheckedElements[i]);
          else
            break;
        }
        if (pathToCheckElements.Length > i)
          relevantElements.AddRange(pathToCheckElements.Skip(i));
      }
      else
        relevantElements = pathToCheckElements.ToList();
      string prefix = prefixElements.Any() ? string.Join(".", prefixElements) + ".": string.Empty;
      for (int i = 1; i <= relevantElements.Count; i++)
      {//then join them back together with the prefix        
        resultList.Add(string.Concat(prefix, string.Join(".", relevantElements.Take(i).ToArray())));
      }
      return resultList;
    }