Make a GET call.

def _get(url:str, headers:dict) -> dict:
    """
    Make a GET call.
    """
    response = requests.get(url, headers=headers)

    data = response.json()
    if response.status_code != 200:
        raise GoogleApiError({"status_code": response.status_code,
                                  "error": data.get("error", "")})
    return data