# File lib/faraday/connection.rb, line 174
    def build_url(url, params = nil)
      uri          = URI.parse(url.to_s)
      if @path_prefix && uri.path !~ /^\//
        uri.path = "#{@path_prefix.size > 1 ? @path_prefix : nil}/#{uri.path}"
      end
      uri.host   ||= @host
      uri.port   ||= @port
      uri.scheme ||= @scheme
      replace_query(uri, params)
      uri
    end