code: def wsgi(self, environ, start_response):
          
          request = Request(environ)
          ctx = Context(request)
          try:
              try:
                  response = self(request, ctx)
                  ctx._run_callbacks('finalize', (request, response))
                  response = response.conditional_to(request)
              except HTTPException as e:
                  response = e.response
              except Exception:
                  self.handle_error(request, ctx)
                  response = InternalServerError().response
  
              response.add_callback(lambda: ctx._run_callbacks('close'))
              return response(environ, start_response)
          finally:
              ctx._run_callbacks('teardown', log_errors=True)
docs: Implements the mapper's WSGI interface.