We need to create an abstraction layer with USPS so that we can get shipping quotes, print postage, add special services and track packages. Please propose CFCs function names, variables/parameters types & return values . Function must return an XML structure. You must have understanding of how USPS web services work and provide simple abstraction layer, along with a basic test site in coldfusion so that it can be tested. also include some basic documentation of how to use services.