[*-Editor] Adapt to revised SourceEditor and related changes

  - Add nullable annotations
  - CleanUp

Change-Id: I13d134333b4258943ee38f7d724a86a26b5f72aa
55 files changed
tree: 4e40b0fad79455929200ad49e92b9fde9ce420f3
  1. .settings/
  2. docmlet/
  3. yaml/
  4. .project
  5. LICENSE
  6. NOTICE.md
  7. pom.xml