Add comments to services example

examples/service.js

@@ -1,13 +1,13 @@
 /* eslint-disable no-unused-vars */
-// This is an example of a service interface and a class and a simple object.
+// This is an example of a service interface as a class and a simple object.
 // As a class
 class MyService {
-  async find(params) {}
-  async get(id, params) {}
-  async create(data, params) {}
-  async update(id, data, params) {}
-  async patch(id, data, params) {}
-  async remove(id, params) {}
+  async find(params) {} // Find all data
+  async get(id, params) {} // Get a single entry
+  async create(data, params) {} // Create an entry
+  async update(id, data, params) {} // Update an entry by replacing it
+  async patch(id, data, params) {} // Update one or more entries by merging with the new data
+  async remove(id, params) {} // Remove an entry
 }
 
 // As an object