Pull together SOAP Header and Body and make call to the appropriate API service, then parse the response.
execute_soap_request(request_body, service = NULL,
network_code = getOption("rdfp.network_code"),
application_name = getOption("rdfp.application_name"),
version = getOption("rdfp.version"), verbose = FALSE)a character string of XML with service name as an attribute
a character string matching one of the API services
a character string matching the code associated with the ad serving network
a character string naming your application so that it can be identified in API calls
a character string indicating the version of the DFP API that is to be used in the SOAP request
a logical indicating whether to print the POSTed XML
a XML document if no error was returned