@staticmethod
def listify(x):
    """If x is a list then just return it.  If x is a dict then
        return a list with x as the sole item.

        Parameters
        ----------
        x : list, dict
            The list or dict to be listified.

        Returns
        -------
        list: x if x is a list.  If x is a dict then returns a list
        with x as the sole item.
        """
    retVal = x
    if isinstance(x, dict):
        retVal = [x]
    return retVal
