You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: query.rb
    path of file: ./repos/stratify/lib/plugins/stratify/foursquare
    
    the code of the file until where you have to start completion: require 'foursquare2'

module Stratify
  module Foursquare
    class Query
      attr_reader :oauth_token

      def initialize(oauth_token)
        @oauth_token = oauth_token
      end

      def activities
        raw_activities.map {|raw_activity| build_activity_from_raw_data(raw_activity)}
      end

      private

      def raw_activities
        client = Foursquare2::Client.new(:oauth_token => oauth_token)
        client.user_checkins.items
      end

    
    
      def build_activity_from_raw_data(data)
        venue = data.venue
        venue_location = venue.location

        Stratify::Foursquare::Activity.new({
          :checkin_id => data.id,
          :venue_id => venue.id,
          :venue_name => venue.name,
          :venue_street => venue_location.address,
          :venue_city => venue_location.city,
          :venue_state => venue_location.state,
          :venue_postal_code => venue_location.postalCode,
          :venue_country => venue_location.country,
          :venue_latitude => venue_location.lat,
          :venue_longitude => venue_location.lng,
          :created_at => Time.at(data.createdAt)
        })
      end