Internal handler for ``autocomplete`` and ``autocomplete_query``.
    See each method's docs for arg details.

def _autocomplete(client, url_part, input_text, session_token=None,
                  offset=None, location=None, radius=None, language=None,
                  types=None, components=None, strict_bounds=False):
    """
    Internal handler for ``autocomplete`` and ``autocomplete_query``.
    See each method's docs for arg details.
    """

    params = {"input": input_text}

    if session_token:
        params["sessiontoken"] = session_token
    if offset:
        params["offset"] = offset
    if location:
        params["location"] = convert.latlng(location)
    if radius:
        params["radius"] = radius
    if language:
        params["language"] = language
    if types:
        params["types"] = types
    if components:
        if len(components) != 1 or list(components.keys())[0] != "country":
            raise ValueError("Only country components are supported")
        params["components"] = convert.components(components)
    if strict_bounds:
        params["strictbounds"] = "true"

    url = "/maps/api/place/%sautocomplete/json" % url_part
    return client._request(url, params).get("predictions", [])