# File lib/twitter/headers.rb, line 7
    def initialize(client, request_method, url, options = {})
      @client = client
      @request_method = request_method.to_sym
      @uri = Addressable::URI.parse(url)
      @options = options
      @signature_options = @request_method == :post && @options.values.any? { |value| value.respond_to?(:to_io) } ? {} : @options
    end