public FileSystemFile CreateFile(string name, string content = null)
{
if (String.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException(nameof(name));
}
if (Files.ContainsKey(name))
{
throw new InvalidOperationException($"File already exists: {name}");
}
if (Folders.ContainsKey(name))
{
throw new InvalidOperationException($"Folder already exists: {name}");
}
var file = new FileSystemFile(name, this);
Files.Add(name, file);
if (content != null)
{
file.SetContent(content);
}
return(file);
}