content: from typing import Any, Callable
  
  from fastapi import APIRouter as FastAPIRouter
  from fastapi.types import DecoratedCallable
  
  
  class APIRouter(FastAPIRouter):
      def api_route(
          self, path: str, *, include_in_schema: bool = True, **kwargs: Any
      ) -> Callable[[DecoratedCallable], DecoratedCallable]:
          if path.endswith("/"):
              path = path[:-1]
  
          add_path = super().api_route(
              path, include_in_schema=include_in_schema, **kwargs
          )
  
          alternate_path = path + "/"
          add_alternate_path = super().api_route(
              alternate_path, include_in_schema=False, **kwargs
          )
  
          def decorator(func: DecoratedCallable) -> DecoratedCallable:
              add_alternate_path(func)
              return add_path(func)
  
          return decorator
  