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

        J = {}

        # State equation
        J[('y2_command', 'y2_command')] = -1.0
        J[('y2_command', 'y2_actual')] = 1.0

        return J
Verify that timer cancellation is honored
dataset/ETHPy150Open OpenMDAO/OpenMDAO/openmdao/test/sellar.py/StateConnection.linearize--crossover with--dataset/ETHPy150Open datastax/python-driver/tests/unit/io/test_eventletreactor.py/EventletTimerTest.test_timer_cancellation