Adding asyncio.sleep() to Asyncified function

[MementoRC]

I seem to hit a conceptualization issue trying to do this. When I reach the FunctionDef, I look for await statements and if there's none, I want to add asyncio.sleep(0) to the last line, I search in the body and try an InsertAfter the last node of the body, but that errors out

Well, the crude method of adding the Expr at the end of body kinda works, but an empty line is inserted as well and it felt clunky

[MementoRC]

Just a bit confused somehow, I simply need to use LazyInsertAfter on the last node then Replace the method. I was creating the new ast.AsyncFunctionDef then had context issues with the LazyInsertAfter