Migrated to the null safety.

ashok-kuvaraja · ashok-kuvaraja · commit f8412e688aec · 2021-04-07T19:17:17.000+05:30
diff --git a/lib/main.dart b/lib/main.dart
@@ -164,7 +164,7 @@ class EmployeeDataSource extends DataGridSource {
   }
 
   @override
-  DataGridRowAdapter buildRow(DataGridRow row) {
+  DataGridRowAdapter? buildRow(DataGridRow row) {
     return DataGridRowAdapter(
         cells: row.getCells().map<Widget>((e) {
       return Container(

Original file line number	Diff line number	Diff line change
`@@ -164,7 +164,7 @@ class EmployeeDataSource extends DataGridSource {`
`164`	`164`	`}`
`165`	`165`
`166`	`166`	`@override`
`167`		`- DataGridRowAdapter buildRow(DataGridRow row) {`
	`167`	`+ DataGridRowAdapter? buildRow(DataGridRow row) {`
`168`	`168`	`return DataGridRowAdapter(`
`169`	`169`	`cells: row.getCells().map<Widget>((e) {`
`170`	`170`	`return Container(`