tree 77dda6b7c8cfd1da95db123e9a0245bee66388af
parent 22e9106224e1514dbee6d6f8271187de606716a6
author Dave Borowitz <dborowitz@google.com> 1500486916 -0400
committer Dave Borowitz <dborowitz@google.com> 1501083579 -0400

BatchRefUpdate: Expand javadocs and add @Nullable

Change-Id: I22d739a9677e24f36323dceadf7d375ac2f446e8