code: def elemc(item, inset):
      
      assert isinstance(inset, stypes.SpiceCell)
      item = stypes.stringToCharP(item)
      return bool(libspice.elemc_c(item, ctypes.byref(inset)))
docs: Determine whether an item is an element of a character set.
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/elemc_c.html
  
      :param item: Item to be tested.
      :type item: str
      :param inset: Set to be tested.
      :type inset: spiceypy.utils.support_types.SpiceCell
      :return: True if item is an element of set.
      :rtype: bool