def apply_nonlinear(self, params, unknowns, resids):

        y2_actual = params['y2_actual']
        y2_command = unknowns['y2_command']

        resids['y2_command'] = y2_actual - y2_command
Destroy the block device mapping.
dataset/ETHPy150Open OpenMDAO/OpenMDAO/openmdao/test/sellar.py/StateConnection.apply_nonlinear--crossover with--dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/db/api.py/block_device_mapping_destroy_by_instance_and_volume