Your explanation is very vague. Could you give us a better idea of what you are trying to accomplish?

Aside from that, you will need to clean up the php-cs-fixer, phpcs, and phpstan problems. And add test cases. The only reason your change passes the CI tests is because your new code is never actually exercised. If it had been, you would certainly have run into errors when trying to call the no-longer-existing getCellByColumnAndRow method (a problem which phpstan flags).

For now, I am putting this change in draft status.