Merge branch 'master' into justin/operation-registry-permanence

docs/source/tutorial/resolvers.md

@@ -254,6 +254,14 @@ Mission: {
 },
 ```
 
+_src/schema.js_
+```js
+  type Mutation {
+    # ... with rest of schema
+    missionPatch(mission: String, size: PatchSize): PatchSize
+  }
+```
+
 The first argument passed into our resolver is the parent, which refers to the mission object. The second argument is the size we pass to our `missionPatch` field, which we use to determine which property on the mission object we want our field to resolve to.
 
 Now that we know how to add resolvers on types other than `Query` and `Mutation`, let's add some more resolvers to the `Launch` and `User` types. Copy this code into your resolver map: