Introducing "idempotent" flag for examples (#263)

answer/examples.json

@@ -3,6 +3,7 @@
         "title": "Ask a question",
         "description": "Ask a question and get an instant answer",
         "run_check": true,
+        "idempotent": true,
         "request": {
           "query": "microsoft"
         },

cache/examples.json

@@ -4,6 +4,7 @@
         "title": "Set a value",
         "description": "Set allows you to set a value",
         "run_check": true,
+        "idempotent": true,
         "request": {
             "key": "foo",
             "value": "bar"

db/examples.json

@@ -35,6 +35,7 @@
     {
       "title": "Read records",
       "run_check": true,
+      "idempotent": true,
       "request": {
         "table": "users",
         "query": "age == 43"

file/examples.json

@@ -15,6 +15,7 @@
     "list": [{
         "title": "List files",
         "run_check": true,
+        "idempotent": true,
         "request": {
             "project": "examples"
         },

helloworld/examples.json

@@ -4,6 +4,7 @@
         "title": "Call the helloworld service",
         "description": "Helloworld is a simple example that takes a name and returns a personalised message",
         "run_check": true,
+        "idempotent": true,
         "request": {
             "name": "John"
         },
@@ -14,8 +15,10 @@
     "stream": [{
         "title": "Streams responses from the server using websockets",
         "run_check": true,
+        "idempotent": true,
         "request": {
-            "name": "John"
+            "name": "John",
+            "messages": 10
         },
         "response": {
             "message": "Hello John"