Util to get name sequence from a dict. For instance, `("location","query")`
    would return src["location"]["query"].

def get_via_name_list(src, name_parts):
    """
    Util to get name sequence from a dict. For instance, `("location","query")`
    would return src["location"]["query"].
    """
    if len(name_parts) > 1:
        for part in name_parts[:-1]:
            if part not in src:
                return None
            src = src[part]
    return src.get(name_parts[-1])