open fun test(): Unit
This test is written to be used from Diagnostics.java. Test expects, that apiServiceFactory is connected to some non-empty service, which was already filled with data, contains seller, entities, etc. So, this test should be called AFTER all other tests in Diagnostics (those tests actually prepare all data and fill the remote service with required content). If test is used from somewhere else (e.g. from unit tests), it should be called after all preparation is made, at least the code, which runs before this test, should create/update/assure, that remote service has at least non-null seller info.