Step 4 – refactoring the export command
Within the Export folder, let’s create a new C# file named ExportCommand.cs.
Every command class (including RootCommand) derives from the Command base class. Furthermore, that base class provides an AddCommand method that takes a parameter of the Command type, which also means any class that derives from the Command class.
Armed with this, we can start refactoring the export command by making the ExportCommand class derive from Command.
After importing the required using statement, specifying the namespace name, and adding the required class constructor, the first iteration of our class looks like this:
using System.CommandLine;
namespace bookmarkr.Commands;
public class ExportCommand : Command
{
#region Constructor
public ExportCommand(string name, string? description = null)
: base(name, description)
&...
