In a ConversionPattern I want to be able to create an AffineForOp and then get out of the loop body and continue adding operations after the end of the loop. Is this possible, and how can I do it? It seemed to me that a solution would be to get the Block of the AffineForOp and then call setInsertionPointToStart on that block. Is this correct? If yes, how can I get the block of the AffineForOp?