* Move null annotations between modifiers and variable type
* Remove redundant public modifiers from interfaces where applicable
* Remove redundant `@NonNull` annotations
Signed-off-by: Wouter Born <github@maindrain.net>
We should not remove entries (so keys) from the map while we are using
the key set (a view) of that map (see JavaDoc: otherwise "results of the
iteration undefined").
Signed-off-by: Markus Rathgeb <maggu2810@gmail.com>