Is it possible to move selection by code? For example, assume that selected `Image Block 3`: <img width="244" alt="2018-06-19 11 52 21" src="https://user-images.githubusercontent.com/4497128/41587233-5afbf4b8-73b7-11e8-90de-0d0c60506d8a.png"> If we call method up — selection moved to `Image Block 2` If we call method down — selection moved to `Text Block 4` Thanks!