@classmethod
def object2array(cls, obj, **kwargs):
    """Convert a message object into an array.

        Args:
            obj (object): Object that would be serialized by this class and
                should be returned in an array form.
            **kwargs: Additional keyword arguments are ignored.

        Returns:
            np.array: Array version of the provided object or None if one cannot
               be created.

        """
    return None
