def implementation_function_survives(a, b):
    """
    This function is a placeholder for the implementation of the mutation testing process.
    It should be replaced with the actual implementation logic.
    """
    c = a + b
    return 42

def implementation_function_killed(a, b):
    """
    This function is a placeholder for the implementation of the mutation testing process.
    It should be replaced with the actual implementation logic.
    """
    return a + b