diff --git a/examples/complex_project/config.py b/examples/complex_project/config.py
new file mode 100644
index 0000000..1ee3bf0
--- /dev/null
+++ b/examples/complex_project/config.py
@@ -0,0 +1,14 @@
+"""
+Application configuration.
+"""
+
+from dataclasses import dataclass
+
+
+@dataclass
+class AppConfig:
+    """Application configuration."""
+    debug: bool = False
+    max_retries: int = 3
+    timeout: int = 30
+    api_url: str = "https://api.example.com"