code: def dlafns(handle, descr):
      
      assert isinstance(descr, stypes.SpiceDLADescr)
      handle = ctypes.c_int(handle)
      nxtdsc = stypes.SpiceDLADescr()
      found  = ctypes.c_int()
      libspice.dlafns_c(handle, ctypes.byref(descr), ctypes.byref(nxtdsc), ctypes.byref(found))
      return nxtdsc, bool(found.value)
docs: Find the segment following a specified segment in a DLA file. 
      
      https://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/dlafns_c.html
      
      :param handle: Handle of open DLA file.
      :type handle: c_int
      :param descr: Descriptor of a DLA segment.
      :type descr: spiceypy.utils.support_types.SpiceDLADescr
      :return: Descriptor of next segment in DLA file
      :rtype: spiceypy.utils.support_types.SpiceDLADescr