How to use the raytracing.thorlabs.AC254_050_A function in raytracing

path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())
    path.append(Space(d=150))
    path.append(eo.PN_33_921())
    path.append(Space(d=50))
    path.append(eo.PN_88_593())
    path.append(Space(180))
    path.append(olympus.LUMPlanFL40X())
    path.append(Space(10))
    path.display()""")
if 18 in examples:
    # Demo #18: Laser beam and vendor lenses
    path = LaserPath()
    path.label = "Demo #18: Laser beam and vendor lenses"
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())
    path.append(Space(d=150))
    path.append(eo.PN_33_921())
    path.append(Space(d=50))
    path.append(eo.PN_88_593())
    path.append(Space(d=180))
    path.append(olympus.LUMPlanFL40X())
    path.append(Space(d=10))
    path.display(beams=[GaussianBeam(w=0.001)], comments="""
    path = LaserPath()
    path.label = "Demo #18: Laser beam and vendor lenses"
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())

def __init__(self):
        super(AC254_050_A,self).__init__(fa=50.2,fb=43.4, R1=33.3,R2=-22.28, R3=-291.07, 
                                    tc1=9, tc2=2.5, te=8.7, n1=N_BAF10.n(0.5876), n2=N_SF10.n(0.5876), diameter=25.4,
                                    url='https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=120',
                                    label="AC254-050-A")

path.objectHeight = 10.0
    path.label = "Path with LUMPlanFL40X"
    path.append(Space(180))
    path.append(olympus.LUMPlanFL40X())
    path.append(Space(10))
    path.display()""")
if 16 in examples:
    # Demo #16: Vendor lenses
    thorlabs.AC254_050_A().display()
    eo.PN_33_921().display()
if 17 in examples:
    # Demo #17: Vendor lenses
    path = ImagingPath()
    path.label = "Demo #17: Vendor Lenses"
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())
    path.append(Space(d=150))
    path.append(eo.PN_33_921())
    path.append(Space(d=50))
    path.append(eo.PN_88_593())
    path.append(Space(180))
    path.append(olympus.LUMPlanFL40X())
    path.append(Space(10))
    path.display(comments=path.label + """\n
    path = ImagingPath()
    path.label = "Demo #17: Vendor Lenses"
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())
    path.append(Space(d=50))
    path.append(thorlabs.AC254_050_A())