# File lib/generators/mongoid/oauth_provider_templates/oauth2_token.rb, line 9
  def to_query
    q = "access_token=#{token}&token_type=bearer"
    q << "&state=#{URI.escape(state)}" if @state
    q << "&expires_in=#{expires_in}" if expires_at
    q << "&scope=#{URI.escape(scope)}" if scope
    q
  end