TestWorkflowEnvironment schedules the first activity retry immediately

Expected Behavior

With a retry policy like:

      RetryOptions.newBuilder()
          .setInitialInterval(Duration.ofSeconds(10))
          .setBackoffCoefficient(2.0)
          .build();

I would expect delays of 10, 20, 40, 80, so attempts (including the first one) run at T0, 10, 30, 70, 150.

Actual Behavior

Attempts run at T0, 0, 10, 30, 70 - the first retry gets scheduled immediately.

Steps to Reproduce the Problem

Check out https://github.com/nagl-stripe/sdk-java/commit/b4f764dfdc22102893be1916b325a40322ccd54e - it has a test case that would pass if the actual behavior were the expected behavior

This is very much not-urgent =)

Specifications

• Version: latest
• Platform: TestWorkflowEnviornment

コミット b4f764dfdc22102893be1916b325a40322ccd54e のテストケースから始め、TestWorkflowEnvironment が activity のリトライをどのようにスケジュールするかを調べます。10、20、40、80 秒の遅延を持つリトライポリシーを再現し、即座にリトライするのではなく、試行が T0、10、30、70、150 に発生することを確認します。