# File lib/oauth/models/consumers/services/oauth2_token.rb, line 43
  def expiration_date(token)
    return token.expires_in, token.expires_at if !token.expires_in.nil? and !token.expires_at.nil?
    return token.expires_in, (Time.now.to_i + token.expires_in.to_i) if token.expires_at.nil? and !token.expires_in.nil?
    return (token.expires_at.to_i - Time.now.to_i), token.expires_at if token.expires_in.nil? and !token.expires_at.nil?
    return "3600", (Time.now.to_i + 3600)
  end