# File lib/oauth/client/net_http.rb, line 49
  def signature_base_string(http, consumer = nil, token = nil, options = {})
    helper_options = oauth_helper_options(http, consumer, token, options)
    @oauth_helper = OAuth::Client::Helper.new(self, helper_options)
    @oauth_helper.hash_body if oauth_body_hash_required?
    @oauth_helper.signature_base_string
  end