public void AddSolution(Solution solution, SolutionFolder folder = null)
{
SolutionFolder GetParentFolder(PrimitiveProject solutionFolder) =>
AllSolutionFolders.FirstOrDefault(x => x.ProjectId == solutionFolder.SolutionFolder?.ProjectId);
IDictionary <string, string> GetItems(SolutionFolder solutionFolder)
=> solutionFolder.Items.Keys
.Select(x => (string)PathConstruction.GetWinRelativePath(Directory, solution.Directory / x))
.ToDictionary(x => x, x => x);
solution.AllSolutionFolders.ForEach(x => AddSolutionFolder(x.Name, x.ProjectId, GetParentFolder(x) ?? folder));
solution.AllSolutionFolders.ForEach(x => GetSolutionFolder(x.ProjectId).Items = GetItems(x));
solution.AllProjects.ForEach(x => AddProject(x.Name, x.TypeId, x.Path, x.ProjectId, x.Configurations, GetParentFolder(x) ?? folder));
}
