The following code block shows example code of how to include an instance of the fft_ifft_dit_1ch graph in a super-graph and also how the constraints might be applied to kernels within the FFT graph. In this example, not all kernels within the fft_ifft_dit_1ch graph are subject to location constraints. It is sufficient for the mapper to find a solution in this case by constraining only the r2comb kernels.