Thank you for contribution!

Please add tests for new features.

Please add tests for new features.

I think I have found where the tests are located: modules/core/misc/java/test
But I am not able to work out how to run them.
Any pointers would be welcome!

You can run tests from the command line terminal - take a look on build/test logs for commands samples.

Please add tests for new features.

Fixed the failing tests and added new tests for the new methods

Well done!

Please rebase this patch onto 3.4 branch first, so it will be available in next 3.4 release.
We will merge changes from 3.4 into master regularly (weekly/bi-weekly).

So, please:

• change "base" branch of this PR: master => 3.4 (use "Edit" button near PR title)
• rebase your commits from master onto 3.4 branch. For example:
  git rebase -i --onto upstream/3.4 upstream/master
  (check list of your commits, save and quit (Esc + "wq" + Enter)
  where upstream is configured by following this GitHub guide and fetched (git fetch upstream).
• push rebased commits into source branch of your fork (with --force option)

Note: no needs to re-open PR, apply changes "inplace".

Please squash commits into one if possible.