public void Migrate_OriginalWasFlexPrivateUseWritingSystemButNowChangedPrivateUse_IdentityElementChangedToPalasoWay()
		{
			using (var environment = new TestEnvironment())
			{
				environment.WriteLdmlFile("test.ldml", LdmlContentForTests.Version0("x-en", "", "", "x-private"));
				var migrator = new LdmlInFolderWritingSystemRepositoryMigrator(environment.LdmlPath, environment.OnMigrateCallback);
				migrator.Migrate();
				AssertLdmlHasXpath(environment.MappedFilePath("test.ldml"), "/ldml/identity/language[@type='qaa']");
				AssertLdmlHasXpath(environment.MappedFilePath("test.ldml"), "/ldml/identity/variant[@type='x-en-private']");
				var ws = new WritingSystemDefinition();
				environment.ReadLdmlFile(environment.MappedFilePath("test.ldml"), ws);
				ws.Variants.Clear();
				ws.Variants.Add("changed");
				environment.WriteLdmlFile(environment.MappedFilePath("test.ldml"), LdmlContentForTests.CurrentVersion(ws.LanguageTag));
				AssertLdmlHasXpath(environment.MappedFilePath("test.ldml"), "/ldml/identity/language[@type='qaa']");
				AssertLdmlHasXpath(environment.MappedFilePath("test.ldml"), "/ldml/identity/variant[@type='x-en-changed']");
			}
		}