def make_url(base_url: str, endpoint: str) ->str:
    """
    Concatenates the base_url with '/' and the endpoint.
    
    Parameters
    ----------
    base_url : str
        Fully qualified hostname + API URI, e.g. https://host/api/v0
    endpoint : str
        Endpoint in the API, e.g. study, dataset, or image
    """
    return base_url + '/' + endpoint
