Docs: How to receive context in controller

Is there any way to receive the context inside a controller?

Goal is to access request data (headers, ip, etc.)

Thanks

Acceptance criteria

• a section in Controllers.html explaining how to access request and response headers or body by using decorators like @inject(RestBindings.Http.REQUEST) public request: Request for different cases:
  • A request header shared by most (or all) endpoints and processed by an express middleware/LB4 sequence action. Example: Authorization or X-API-Key.
  • A request header shared by many endpoints but used internally in the endpoint implementation (an express route handler/LB4 controller method). Maybe come up with a somewhat realistic example of such header.
  • A response header set by an express middleware/LB4 sequence action. For example X-Rate-Limit information provided by a rate-limiting extension in all responses.
  • A response header set by the endpoint (an express route handler/LB4 controller method). An example: Location header included ind 201 Created responses.

Start with Controllers.html and the documented @inject(RestBindings.Http.REQUEST) pattern. Add examples covering request and response headers or bodies in middleware or sequence actions and controller methods, including the Authorization or X-API-Key, rate-limit, and Location cases, then verify every acceptance criterion is addressed.