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add your settings to config.yml

doctrine_cache:
    providers:
        mayeco_google_tokens_cache:
            type: memcached
            namespace: tokens

mayeco_google:
    oauth_info:
        client_id: client_id_de_proyecto_en_google_developer_console
        client_secret: client_secret_de_proyecto_en_google_developer_console
        redirect_url: client_redirect_app_route_google_developer_console
    adwords:
        dev_token: google_adwords_api_dev_token