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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 bltfrm(frmcls, outCell=None):
 """ Return a SPICE set containing the frame IDs of all built-in frames of a specified class. http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/bltfrm_c.html :param frmcls: Frame class. :type frmcls: int :param outCell: Optional SpiceInt Cell that is returned :type outCell: spiceypy.utils.support_types.SpiceCell :return: Set of ID codes of frames of the specified class. :rtype: spiceypy.utils.support_types.SpiceCell """

    frmcls = ctypes.c_int(frmcls)
    if not outCell:
        outCell = stypes.SPICEINT_CELL(1000)
    libspice.bltfrm_c(frmcls, outCell)
    return outCell