I'm trying to remove an element from HashSet, but it won't.
When calling .contains(obj), it returns true, so .contains knows the object is in HashSet. But when I call .remove(obj), the object isn't removed from the HashSet and it returns false.
Code of object - https://gist.github.com/rincew1nd/f97f11d21ba41d2f4197f9a9da02fea1