"title": "Location",
                            "type": "array",
                        },
                        "msg": {
                            "title": "Message",
                            "type": "string",
                        },
                        "type": {
                            "title": "Error Type",
                            "type": "string",

                            "items": {
                                "anyOf": [{"type": "string"}, {"type": "integer"}]
                            },
                        },
                        "msg": {"title": "Message", "type": "string"},
                        "type": {"title": "Error Type", "type": "string"},
                    },
                },
                "HTTPValidationError": {

                            "items": {
                                "anyOf": [{"type": "string"}, {"type": "integer"}]
                            },
                        },
                        "msg": {"title": "Message", "type": "string"},
                        "type": {"title": "Error Type", "type": "string"},
                    },
                },
            }
        },

    if log.is_file():
        os.remove(log)  # pragma: no cover
    response = client.post("/send-notification/******@****.***")
    assert response.status_code == 200, response.text
    assert response.json() == {"message": "Notification sent in the background"}
    with open("./log.txt") as f:

        }
    }

    static class CycleDetectedException extends RuntimeException {
        private final List<String> cycle;

        CycleDetectedException(String message, List<String> cycle) {
            super(message);
            this.cycle = cycle;
        }

        public List<String> getCycle() {
            return cycle;
        }

        @Override

        } catch (final CycleDetectedException e) {
            String message = "The projects in the reactor contain a cyclic reference: " + e.getMessage();
            ProjectCycleException error = new ProjectCycleException(message, e);
            return Result.error(
                    Collections.singletonList(new DefaultModelProblem(null, null, null, null, 0, 0, error)));

app = FastAPI()


@app.exception_handler(UnicornException)
async def unicorn_exception_handler(request: Request, exc: UnicornException):
    return JSONResponse(
        status_code=418,
        content={"message": f"Oops! {exc.name} did something. There goes a rainbow..."},
    )


@app.get("/unicorns/{name}")
async def read_unicorn(name: str):
    if name == "yolo":
        raise UnicornException(name=name)

```txt
Hello, World from Flask!
```

E se você for até <a href="http://localhost:8000/v2" class="external-link" target="_blank">http://localhost:8000/v2</a>, você verá o retorno do FastAPI:

```JSON
{
    "message": "Hello World"
}

                            "items": {
                                "anyOf": [{"type": "string"}, {"type": "integer"}]
                            },
                        },
                        "msg": {"title": "Message", "type": "string"},
                        "type": {"title": "Error Type", "type": "string"},
                    },
                },
            }
        },

                        "title": "Location",
                        "type": "array",
                    },
                    "msg": {"title": "Message", "type": "string"},
                    "type": {"title": "Error Type", "type": "string"},
                },
                "required": ["loc", "msg", "type"],
                "title": "ValidationError",