def METHOD_NAME(self, e):
    """Called if decoding of the JSON data failed.  The return value of
    this method is used by :meth:`get_json` when an error occurred.  The
    default implementation just raises a :class:`BadRequest` exception.
    .. versionchanged:: 0.10
       Removed buggy previous behavior of generating a random JSON
       response.  If you want that behavior back you can trivially
       add it by subclassing.
    .. versionadded:: 0.8
    """
    raise BadRequest()