s.",
            "help"    : "http://www.example.com/service/sum.html",
            "params"  : [ 
                { "name" : "a", "type" : "num" }, 
                { "name" : "b", "type" : "num" } ],
            "return" : {
                "type" : "num" 
        }, 
        {
            "name"    : "time",
            "summary" : "Returns the current date and time in ISO 8601 format.",
            "help"    : "http://www.example.com/service/time.html",
            "return" : {
                "type" : 