AbstractEventProcessor: Don't return null from process method

The method returns an Optional, so the appropriate value to
return is Optional.empty().

Change-Id: I68384b13bf0193fbd3c3995c8cd05285b3c2c06a
1 file changed
tree: 0e3dd9dc6e44f39719f44f1fa0fc1d9dec05eda2
  1. src/
  2. tools/
  3. .gitignore
  4. bazlets.bzl
  5. BUILD
  6. external_plugin_deps.bzl
  7. WORKSPACE