sdk: readable clients (no Empty wrapper, no unused error module), documented examples with tests

examples/consumer/imports/www.json

@@ -1,10 +1,6 @@
 {
   "components": {
     "schemas": {
-      "Empty": {
-        "description": "Empty parameters for methods without arguments.",
-        "type": "object"
-      },
       "StartParams": {
         "description": "The server configuration.",
         "properties": {
@@ -75,10 +71,7 @@
               "type": "integer"
             }
           },
-          "summary": "Count the HTTP requests this server answered.",
-          "x-sausage-params": {
-            "$ref": "#/components/schemas/Empty"
-          }
+          "summary": "Count the HTTP requests this server answered."
         },
         {
           "description": "End this process after the response reaches the client.",
@@ -91,10 +84,7 @@
               "type": "null"
             }
           },
-          "summary": "End this process after the response reaches the client.",
-          "x-sausage-params": {
-            "$ref": "#/components/schemas/Empty"
-          }
+          "summary": "End this process after the response reaches the client."
         }
       ]
     }