def METHOD_NAME(self):
    t = np.linspace(0, 30, 1900)
    m = 5e-7 * np.ones(1900)
    component = FuelCycleComponent("test", t, 0.995, 1.11, retention_model="bathtub")
    component.add_in_flow(m)
    component.run()
    self.ax.plot(t, component.inventory, label="linear")