<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def get_model(model:nn.Module):
    "Return the model maybe wrapped inside `model`."
    return model.module if isinstance(model, (DistributedDataParallel, nn.DataParallel)) else model