tree dd31bbc0638f6a912ae0cd9e7423fd910625deb7
parent 17b3aaa9ca4e6b23a5b5bd2e25ca0150b1aaae94
author Joerg Zieren <zieren@google.com> 1618240826 +0200
committer Joerg Zieren <zieren@google.com> 1619188740 +0200

Refactor ExternalIdNotes and its inner classes

This makes implicit behavior (triggered by combinations of null values for
specific fields) explicit.

Change-Id: Ib5ff16246c23127d0b3a8fe74f934a6dbd83f718