chore: add types for async methods (#7799)

PiperOrigin-RevId: 693215877
Source-Link: googleapis/googleapis@bb6b53e
Source-Link: https://github.com/googleapis/googleapis-gen/commit/db8b5a93484ad44055b2bacc4c7cf87e970fe0ed
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src/V1beta1/Client/ErrorGroupServiceClient.php

@@ -52,8 +52,8 @@
  *
  * @experimental
  *
- * @method PromiseInterface getGroupAsync(GetGroupRequest $request, array $optionalArgs = [])
- * @method PromiseInterface updateGroupAsync(UpdateGroupRequest $request, array $optionalArgs = [])
+ * @method PromiseInterface<ErrorGroup> getGroupAsync(GetGroupRequest $request, array $optionalArgs = [])
+ * @method PromiseInterface<ErrorGroup> updateGroupAsync(UpdateGroupRequest $request, array $optionalArgs = [])
  */
 final class ErrorGroupServiceClient
 {

src/V1beta1/Client/ErrorStatsServiceClient.php

@@ -55,9 +55,9 @@
  *
  * @experimental
  *
- * @method PromiseInterface deleteEventsAsync(DeleteEventsRequest $request, array $optionalArgs = [])
- * @method PromiseInterface listEventsAsync(ListEventsRequest $request, array $optionalArgs = [])
- * @method PromiseInterface listGroupStatsAsync(ListGroupStatsRequest $request, array $optionalArgs = [])
+ * @method PromiseInterface<DeleteEventsResponse> deleteEventsAsync(DeleteEventsRequest $request, array $optionalArgs = [])
+ * @method PromiseInterface<PagedListResponse> listEventsAsync(ListEventsRequest $request, array $optionalArgs = [])
+ * @method PromiseInterface<PagedListResponse> listGroupStatsAsync(ListGroupStatsRequest $request, array $optionalArgs = [])
  */
 final class ErrorStatsServiceClient
 {

src/V1beta1/Client/ReportErrorsServiceClient.php

@@ -51,7 +51,7 @@
  *
  * @experimental
  *
- * @method PromiseInterface reportErrorEventAsync(ReportErrorEventRequest $request, array $optionalArgs = [])
+ * @method PromiseInterface<ReportErrorEventResponse> reportErrorEventAsync(ReportErrorEventRequest $request, array $optionalArgs = [])
  */
 final class ReportErrorsServiceClient
 {