XXX: Extend example: runtime_calls

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

examples/examples/runtime_calls.rs

@@ -32,18 +32,47 @@ pub mod polkadot {}
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
     tracing_subscriber::fmt::init();
+    let api = OnlineClient::<PolkadotConfig>::new().await?;
 
     let api_tx = polkadot::runtime_api::Core::version();
     println!("RuntimeApi payload: {:?}", api_tx);
 
-    let api = OnlineClient::<PolkadotConfig>::new().await?;
     let bytes = api.runtime_api().at(None).await?.call(api_tx).await?;
-
     println!("Result: {:?}", bytes);
+
     let result: polkadot::runtime_api::Core::version_target =
         Decode::decode(&mut &bytes[..])?;
+    println!(
+        "Result for polkadot::runtime_api::Core::version(): {:?}\n\n",
+        result
+    );
 
-    println!("Result is: {:?}", result);
+    let api_tx = polkadot::runtime_api::Metadata::metadata_versions();
+    println!("RuntimeApi payload: {:?}", api_tx);
+
+    let bytes = api.runtime_api().at(None).await?.call(api_tx).await?;
+    println!("Result: {:?}", bytes);
+
+    let result: polkadot::runtime_api::Metadata::metadata_versions_target =
+        Decode::decode(&mut &bytes[..])?;
+    println!(
+        "Result for polkadot::runtime_api::Metadata::metadata_versions(): {:?}\n\n",
+        result
+    );
+
+    let alice = AccountKeyring::Alice.to_account_id().into();
+    let api_tx = polkadot::runtime_api::AccountNonceApi::account_nonce(alice);
+    println!("RuntimeApi payload: {:?}", api_tx);
+
+    let bytes = api.runtime_api().at(None).await?.call(api_tx).await?;
+    println!("Result: {:?}", bytes);
+
+    let result: polkadot::runtime_api::AccountNonceApi::account_nonce_target =
+        Decode::decode(&mut &bytes[..])?;
+    println!(
+        "Result for polkadot::runtime_api::AccountNonceApi::account_nonce: {:?}\n\n",
+        result
+    );
 
     Ok(())
 }