text: from fastapi import FastAPI
  from fastapi.routing import APIRoute
  from pydantic import BaseModel
  
  
  def custom_generate_unique_id(route: APIRoute):
      return f"{route.tags[0]}-{route.name}"
  
  
  app = FastAPI(generate_unique_id_function=custom_generate_unique_id)
  
  
  class Item(BaseModel):
      name: str
      price: float
  
  
  class ResponseMessage(BaseModel):
      message: str
  
  
  class User(BaseModel):
      username: str
      email: str
  
  
  @app.post("/items/", response_model=ResponseMessage, tags=["items"])
  async def create_item(item: Item):
      return {"message": "Item received"}
  
  
  @app.get("/items/", response_model=list[Item], tags=["items"])
  async def get_items():
      return [
          {"name": "Plumbus", "price": 3},
          {"name": "Portal Gun", "price": 9001},
      ]
  
  
  @app.post("/users/", response_model=ResponseMessage, tags=["users"])
  async def create_user(user: User):
      return {"message": "User received"}
  