fmt, fixes and additions

heromodels/examples/custom_model_example.rs

@@ -41,11 +41,16 @@ fn main() {
     println!("Before saving - CustomUser DB Keys: {:?}", user.db_keys());
 
     // Save the model to the database
-    let collection = db.collection::<CustomUser>().expect("can open user collection");
+    let collection = db
+        .collection::<CustomUser>()
+        .expect("can open user collection");
     let (user_id, saved_user) = collection.set(&user).expect("can save user");
 
     println!("\nAfter saving - CustomUser ID: {}", saved_user.get_id());
-    println!("After saving - CustomUser DB Keys: {:?}", saved_user.db_keys());
+    println!(
+        "After saving - CustomUser DB Keys: {:?}",
+        saved_user.db_keys()
+    );
     println!("Returned ID: {}", user_id);
 
     // Verify that the ID was auto-generated
@@ -53,5 +58,8 @@ fn main() {
     assert_ne!(saved_user.get_id(), 0);
 
     println!("\nExample finished. DB stored at {}", db_path);
-    println!("To clean up, you can manually delete the directory: {}", db_path);
+    println!(
+        "To clean up, you can manually delete the directory: {}",
+        db_path
+    );
 }