def block_name(model_selector):
    """
    return canonical block name for model_selector

    Ordinarily and ideally this would just be model_selector, but since mp_tasks saves all
    shared data blocks in a common dict to pass to sub-tasks, we want to be able override
    block naming convention to handle any collisions between model_selector names and skim names.
    Until and unless that happens, we just use model_selector name.

    Parameters
    ----------
    model_selector

    Returns
    -------
    block_name : str
        canonical block name
    """
    return model_selector
