docs: examples of things only GraphQL can do

docs/content/guides/developer/advanced/graphql-migration.mdx

@@ -142,8 +142,49 @@ The cursor is now passed in the `after` (or `before`) fields on the connection,
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 </Tabs>
 
+## New features
+
+There are also things that GraphQL can do, which JSON-RPC cannot:
+
+### Example 4: Getting objects by type
+
+This query fetches the latest versions of objects of type `0x2::package::Publisher` that are currently live on-chain.
+
+```graphql
+query {
+  objects(filter: { type: "0x2::package::Publisher" }) {
+    nodes {
+      address
+      digest
+      asMoveObject {
+        contents { json }
+      }
+    }
+  }
+}
+```
+
+### Example 5: Paging through package versions
+
+The goal is to find all versions of the Sui framework, and list their modules:
+
+```graphql
+query {
+  packageVersions(address: "0x2") {
+    nodes {
+      version
+      modules {
+        nodes {
+          name
+        }
+      }
+    }
+  } 
+}
+```
+
 ## Related links
 
 - [GraphQL reference](../../../references/sui-graphql.mdx): Auto-generated GraphQL reference for Sui RPC.
 - [GraphQL quick-start](../getting-started/graphql-rpc.mdx): Querying Sui RPC with GraphQL gets you started using GraphQL to query the Sui RPC for on-chain data.
-- [GraphQL concepts](../../../concepts/graphql-rpc.mdx): GraphQL for Sui RPC examines the elements of GraphQL that you should know to get the most from the service.
+- [GraphQL concepts](../../../concepts/graphql-rpc.mdx): GraphQL for Sui RPC examines the elements of GraphQL that you should know to get the most from the service.