Missing calendar-home-set seems to block library usage

[SPC-code]

Both versions 1.0.5 and 2.0.0-alpha seem to require the property to be present in the provider root. But Yandex does not seem to have this property (or I am searching in the wrong place). I did not find a way to bypass the property discovery. The class is final and methods used inside are protected (yeah, protected methods in a final class. Is there a way to fix that?

Also there seems to be a bug in 2.0.0, findCalendarHomeSet return value is checked for null, but instead of returning null, an unreadable error is thrown inside.