tree aa31c7218166d4da383d6ef832faf5244a5761b4
parent 44e8fa7b1befe7f6fe9ba7d9ca107039ee57aae8
author zijunzhao <zijunzhao@google.com> 1675974498 +0000
committer Zijun Zhao <zijunzhao@google.com> 1675995401 +0000

Nullability check for signal module.

Bugs: b/245972273
Test: None
Change-Id: I958e7fd7836afd1e6ff9f2c808171faa602022c7