Update docs to use features instead of Neo4jGraphQLSubscriptionsSingleInstancePlugin (#167)

* Update docs to use features instead of Neo4jGraphQLSubscriptionsSingleInstancePlugin

* small adjustments, mostly a heading alias that was never working + an xref to that heading

---------

Co-authored-by: Richard Sill <richard.sill@neo4j.com>

Author: mjfwebb

modules/ROOT/pages/ogm/subscriptions.adoc

@@ -10,7 +10,7 @@ This section shows how to use subscriptions with the OGM inside custom resolvers
 
 === Prerequisites
 
-. Use the following type definitions:
+Use the following type definitions:
 [source, javascript, indent=0]
 ----
 const typeDefs = `#graphql
@@ -21,28 +21,32 @@ const typeDefs = `#graphql
 `;
 ----
 
-. Set up a subscriptions plugin instance to be shared between the Library and the OGM constructors:
-[source, javascript, indent=0]
-----
-const subscriptionsPlugin = new Neo4jGraphQLSubscriptionsSingleInstancePlugin();
-----
+Set up a server that supports subscriptions. See more instructions in the xref:subscriptions/getting-started.adoc#_setting_up_an_apolloserver_server[Getting started] page.
 
-. Set up a server that supports subscriptions.
-See more instructions in the xref:subscriptions/getting-started.adoc#setting-up-server[Getting started page].
+=== Adding the OGM
 
+Enable the subscriptions feature in the OGM constructor:
 
-=== Adding the OGM
+[source, javascript, indent=0]
+----
+const ogm = new OGM({
+    typeDefs,
+    driver,
+    features: {
+        subscriptions: true
+    },
+});
+----
 
-In order to utilize the `@private` marked field on the `User` type, you need to create the `User` model.
-Also, to use the subscriptions, you need to pass in the subscriptions plugin instance to the OGM constructor:
+Create the `User` model, which utilizes the `@private` marked field on the `User` type in the type definitions.
 
 [source, javascript, indent=0]
 ----
-const ogm = new OGM({ typeDefs, driver, plugins: { subscriptions: subscriptionsPlugin } });
-const Profile = ogm.model("Profile");
+const User = ogm.model("User");
 ----
 
-Make sure you initialize the OGM instance before using it by adding the following line to the `main()` function:
+Initialize the OGM instance before using it by adding the following line to the `main()` function:
+
 [source, javascript, indent=0]
 ----
 await ogm.init();
@@ -52,39 +56,39 @@ await ogm.init();
 
 xref:custom-resolvers/[Custom resolvers] can be used for multiple reasons such as performing data manipulation and checks, or interact with third party systems. 
 In this case, you only need to create a `User` node with the `password` field set.
-You can do that by adding a sign-up mutation.
-For example:
+You can do that by adding a sign-up mutation:
 
 [source, javascript, indent=0]
 ----
 const resolvers = {
   Mutation: {
     signUp: async (_source, { username, password }) => {
       const [existing] = await User.find({
-          where: {
-              username,
-          },
+        where: {
+          username,
+        },
       });
       if (existing) {
-          throw new Error(`User with username ${username} already exists!`);
+        throw new Error(`User with username ${username} already exists!`);
       }
       const { users } = await User.create({
-          input: [
-              {
-                  username,
-                  password,
-              }
-          ]
+        input: [
+          {
+            username,
+            password,
+          },
+        ],
       });
       return createJWT({ sub: users[0].id });
     },
   },
 };
 const typeDefs = `
-   type Mutation {
+    type Mutation {
         signUp(username: String!, password: String!): String!
     }
-`
+`;
+
 ----
 
 [discrete]
@@ -94,7 +98,6 @@ Altogether, it should look like this:
 
 [source, javascript, indent=0]
 ----
-const subscriptionsPlugin = new Neo4jGraphQLSubscriptionsSingleInstancePlugin();
 const driver = neo4j.driver(
   "bolt://localhost:7687",
   neo4j.auth.basic("neo4j", "password")
@@ -131,17 +134,22 @@ const resolvers = {
     },
   },
 };
-// Share the subscriptions plugin instance across the Library and the OGM
 const neoSchema = new Neo4jGraphQL({
-  typeDefs,
-  driver,
-  resolvers,
-  plugins: {
-    subscriptions: subscriptionsPlugin,
-  },
+    typeDefs,
+    driver,
+    resolvers,
+    feature: {
+        subscriptions: true,
+    },
+});
+const ogm = new OGM({
+    typeDefs,
+    driver,
+    features: {
+        subscriptions: true
+    },
 });
-const ogm = new OGM({ typeDefs, driver, plugins: { subscriptions: subscriptionsPlugin } });
-const Profile = ogm.model("Profile");
+const User = ogm.model("User");
 
 async function main() {
   // initialize the OGM instance

modules/ROOT/pages/subscriptions/getting-started.adoc

@@ -9,6 +9,7 @@ This guide shows how to start using subscription capabilities on a GraphQL serve
 If you use link:https://studio.apollographql.com/[Apollo Studio], make sure to select the link:https://www.npmjs.com/package/graphql-ws[graphql-ws] implementation in the connection settings.
 ====
 
+
 == Enable subscription capabilities
 
 Before using subscriptions on a GraphQL server, you must enable them by passing the `subscriptions` feature to `Neo4jGraphQL`:
@@ -24,6 +25,7 @@ new Neo4jGraphQL({
 });
 ----
 
+
 == Install dependencies
 
 Then, the next step is to install the following dependencies:
@@ -33,8 +35,8 @@ Then, the next step is to install the following dependencies:
 npm i --save ws graphql-ws neo4j-driver @neo4j/graphql express @apollo/server body-parser cors
 ----
 
-[setting-up-server]
-== Set up an `@apollo/server` server
+
+== Setting up an `@apollo/server` server
 
 Add the following code to your `index.js` file to implement a simple `@apollo/server` server with subscriptions (for more options, see link:https://www.apollographql.com/docs/apollo-server/data/subscriptions/[Apollo's documentation]):