[metrics_center] suppressed new linter warnings (#422)
diff --git a/packages/metrics_center/lib/src/google_benchmark.dart b/packages/metrics_center/lib/src/google_benchmark.dart
index 8a6e8de..118167f 100644
--- a/packages/metrics_center/lib/src/google_benchmark.dart
+++ b/packages/metrics_center/lib/src/google_benchmark.dart
@@ -17,6 +17,7 @@
'big_o',
];
+// ignore: avoid_classes_with_only_static_members
/// Parse the json result of https://github.com/google/benchmark.
class GoogleBenchmarkParser {
/// Given a Google benchmark json output, parse its content into a list of [MetricPoint].
