fix: change toString to value in TopicStatsClient (#210)

Author: palmere-google

google-cloud-pubsublite/src/main/java/com/google/cloud/pubsublite/internal/TopicStatsClient.java

@@ -51,5 +51,6 @@ ApiFuture<ComputeMessageStatsResponse> computeMessageStats(
  *
  * @throws StatusException on a failure to properly terminate.
  */
+ @Override
  void close() throws StatusException;
 }

google-cloud-pubsublite/src/main/java/com/google/cloud/pubsublite/internal/TopicStatsClientImpl.java

@@ -110,7 +110,7 @@ public ApiFuture<ComputeMessageStatsResponse> computeMessageStats(
  () -> {
  return stub.computeMessageStats(
  ComputeMessageStatsRequest.newBuilder()
- .setTopic(path.toString())
+ .setTopic(path.value())
  .setPartition(partition.value())
  .setStartCursor(Cursor.newBuilder().setOffset(start.value()).build())
  .setEndCursor(Cursor.newBuilder().setOffset(end.value()).build())

google-cloud-pubsublite/src/test/java/com/google/cloud/pubsublite/internal/TopicStatsClientImplTest.java

@@ -96,7 +96,7 @@ private static Offset end() {
 
  private static ComputeMessageStatsRequest request() {
  return ComputeMessageStatsRequest.newBuilder()
- .setTopic(path().toString())
+ .setTopic(path().value())
  .setPartition(partition().value())
  .setStartCursor(Cursor.newBuilder().setOffset(start().value()).build())
  .setEndCursor(Cursor.newBuilder().setOffset(end().value()).build())