def METHOD_NAME(self, name):
    """Return a user-friendly label and name for a code block.
    Parameters
    ----------
    name : str
        The name for the code block returned from get_code_name
    Returns
    -------
    A (label, name) pair that can be used in tracebacks, or None if the default formatting should be used.
    """
    if name in self._filename_map:
        return "Cell", "In[%s]" % self._filename_map[name]