tree 72212d39e067d69e98ac2c9060ca19f2b0230abe
parent c72aba4fb58cdc33a63adeb0c537d513293a8c4d
author Googler <jhorvitz@google.com> 1729699538 -0700
committer Copybara-Service <copybara-worker@google.com> 1729699621 -0700

Add `@Nullable` annotation to `getPrimaryInput()`.

It can return null when the action has no inputs.

Also make `getPrimaryInput()` more efficient by skipping the `toList()` call in the singleton case.

PiperOrigin-RevId: 688987162
Change-Id: Ie25bf6aaa4334dfefd3d575cd2109367a61305cc