[SourceEditor] Revise SourceEditor and related classes
  - Correct namings
  - Add more nullable annotations
  - CleanUp

Change-Id: I8b435f3ecfd0edd18a745cb65fd90c66b3782da8
86 files changed
tree: 6d32f3547f54bc485f06e9909cf7e2f94cf5f11e
  1. .settings/
  2. ltk/
  3. .project
  4. LICENSE
  5. NOTICE.md
  6. pom.xml