Added mutable getter for the openapi instance of a OpenApiRouter (#1262)

There is currently no way of changing the `OpenApi` without breaking the router apart and recomposing it.

This enables modification of the API while mounting the routes.
---------

Co-authored-by: Juha Kukkonen <juha7kukkonen@gmail.com>

utoipa-axum/CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ### Changed
 
+* Added mutable getter for the openapi instance of a OpenApiRouter (https://github.com/juhaku/utoipa/pull/1262)
 * utoipa-axum: Add basic path params test (https://github.com/juhaku/utoipa/pull/1268)
 
 ## 0.1.3 - Dec 19 2024

utoipa-axum/src/router.rs

@@ -403,6 +403,11 @@ where
         &self.1
     }
 
+    /// Get mutable reference to the [`utoipa::openapi::OpenApi`] instance of the router.
+    pub fn get_openapi_mut(&mut self) -> &mut utoipa::openapi::OpenApi {
+        &mut self.1
+    }
+
     /// Split the content of the [`OpenApiRouter`] to parts. Method will return a tuple of
     /// inner [`axum::Router`] and [`utoipa::openapi::OpenApi`].
     pub fn split_for_parts(self) -> (axum::Router<S>, utoipa::openapi::OpenApi) {