Update src/Octoshift/Commands/AbortMigration/AbortMigrationCommandBas…

…e.cs

Co-authored-by: Arin Ghazarian <[email protected]>

src/Octoshift/Commands/AbortMigration/AbortMigrationCommandBase.cs

@@ -30,7 +30,7 @@ public AbortMigrationCommandBase() : base(
     {
         Description = "Display more information to the console."
     };
-    public Option<string> TargetApiUrl { get; } = new("--target-api-url")
+    public virtual Option<string> TargetApiUrl { get; } = new("--target-api-url")
     {
         Description = "The URL of the target API, if not migrating to github.com. Defaults to https://api.github.com"
     };