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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def dskn02(handle, dladsc, plid):
 """ Compute the unit normal vector for a specified plate from a type 2 DSK segment. https://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/dskn02_c.html :param handle: DSK file handle. :type handle: int :param dladsc: DLA descriptor. :type dladsc: spiceypy.utils.support_types.SpiceDLADescr :param plid: Plate ID. :type plid: int :return: late's unit normal vector. :rtype: 3-Element Array of floats. """

    handle = ctypes.c_int(handle)
    plid   = ctypes.c_int(plid)
    normal = stypes.emptyDoubleVector(3)
    libspice.dskn02_c(handle, dladsc, plid, normal)
    return stypes.cVectorToPython(normal)