Example how to update data

[mkoehne]

Summary

I would be super helpful to have an example of how to change data.
For example I want to create a new cell or change a cells position.
What is the best way to update the UI?

Thank you very much that you have made your code open source 💙

Acceptance criteria

Technical details

I found the putRawCells method in the SwayzeCellsController and it uses updateState.
I tried to use it like this:
cellsController.updateState((modifier) { modifier.putCell(cellParser(element)); });

But I will not update the UI. It only adds the new cell to the matrix but is does not trigger a rebuild.
Only when I scroll so far that the cell is not visible any more and scroll back then it renders the new cell.