old_contents: from sanic import Blueprint, response
  from sanic_openapi import doc
  
  from .. import utils
  
  blueprint = Blueprint("Authentication", url_prefix="/auth")
  
  
  @blueprint.get("/")
  @doc.summary("Validate your API key")
  @doc.response(200, str, description="Your API key is valid")
  @doc.response(401, str, description="Your API key is invalid")
  async def validate(request):
      return (
          response.json({"message": "Your API key is valid"}, status=200)
          if utils.meta.authenticated(request)
          else response.json({"message": "Your API key is invalid."}, status=401)
      )
  
new_contents: from sanic import Blueprint, response
  from sanic_openapi import doc
  
  from .. import utils
  
  blueprint = Blueprint("Authentication", url_prefix="/auth")
  
  
  @blueprint.get("/")
  @doc.summary("Validate your API key")
  @doc.response(200, str, description="Your API key is valid")
  @doc.response(401, str, description="Your API key is invalid")
  async def validate(request):
      return (
          response.json({"message": "Your API key is valid."}, status=200)
          if utils.meta.authenticated(request)
          else response.json({"message": "Your API key is invalid."}, status=401)
      )
  
subject: Add period to message