def create
      request = if receivers.empty?
                  Request.post('transactions', api_version, params)
                else
                  Request.post_xml('transactions/', nil, credentials, xml_params)
                end

      Response.new(request, self).serialize
    end
def create
      request = if receivers.empty?
                  Request.post('transactions', api_version, params)
                else
                  Request.post_xml('transactions/', nil, credentials, xml_params)
                end

      Response.new(request, self).serialize
    end
Calls the PagSeguro web service and create this request for payment.
 Return boolean.