"fmt"
)

// Error is the generic type for any error happening during tag
// parsing.
type Error struct {
	err error
}

// Errorf - formats according to a format specifier and returns
// the string as a value that satisfies error of type tagging.Error
func Errorf(format string, a ...interface{}) error {
	return Error{err: fmt.Errorf(format, a...)}
}

// Unwrap the internal error.
func (e Error) Unwrap() error { return e.err }

	"fmt"
)

// Error is the generic type for any error happening during tag
// parsing.
type Error struct {
	err error
}

// Errorf - formats according to a format specifier and returns
// the string as a value that satisfies error of type tagging.Error
func Errorf(format string, a ...interface{}) error {
	return Error{err: fmt.Errorf(format, a...)}
}

// Unwrap the internal error.
func (e Error) Unwrap() error { return e.err }

    from docs_src.dependencies.tutorial008d_an_py39 import InternalError

    with pytest.raises(InternalError) as exc_info:
        client.get("/items/portal-gun")
    assert (
        exc_info.value.args[0] == "The portal gun is too dangerous to be owned by Rick"
    )


@needs_py39
def test_internal_server_error():
    from docs_src.dependencies.tutorial008d_an_py39 import app

	//
	//    - if baseInterval=10s, then 5s <= waitInterval() < 15s
	//
	//    - if baseInterval=10m, then 5m <= waitInterval() < 15m
	waitInterval := func() time.Duration {
		// Calculate a random value such that 0 <= value < baseInterval
		randAmt := time.Duration(r.Float64() * float64(baseInterval))
		return baseInterval/2 + randAmt
	}

	timer := time.NewTimer(waitInterval())
	defer timer.Stop()

			var v interface{} = callbacks.Create()
			callMethod := func(s interface{}, name string, args ...interface{}) {
				var argValues []reflect.Value
				for _, arg := range args {
					argValues = append(argValues, reflect.ValueOf(arg))
				}

				results := reflect.ValueOf(s).MethodByName(name).Call(argValues)
				if len(results) > 0 {
					v = results[0].Interface()
				}
			}

			if c.name == "" {

				}
			}

			// Any concurrency less than '4' just stick to '4' concurrent
			// operations for now to begin with.
			if concurrency < 4 {
				concurrency = 4
			}

			// if GOMAXPROCS is set to a lower value then choose to use
			// concurrency == GOMAXPROCS instead.
			if runtime.GOMAXPROCS(0) < concurrency {
				concurrency = runtime.GOMAXPROCS(0)
			}
		}

		throughputHighestGet := uint64(0)

      rem ZOMG (Part #2) WE use !! here to delay the expansion of
      rem CFG_OPTS, otherwise it remains "" for this loop.
      set CFG_OPTS=!CFG_OPTS! !DO_NOT_REUSE_ME!
    )
  )
)

rem We use the value of the JAVACMD environment variable if defined
set _JAVACMD=%JAVACMD%

if "%_JAVACMD%"=="" (
  if not "%JAVA_HOME%"=="" (
    if exist "%JAVA_HOME%\bin\java.exe" set "_JAVACMD=%JAVA_HOME%\bin\java.exe"

Axis-1\",\"type\":\"category\",\"position\":\"bottom\",\"show\":true,\"style\":{},\"scale\":{\"type\":\"linear\"},\"labels\":{\"show\":true,\"truncate\":100},\"title\":{}}],\"valueAxes\":[{\"id\":\"ValueAxis-1\",\"name\":\"LeftAxis-1\",\"type\":\"value\",\"position\":\"left\",\"show\":true,\"style\":{},\"scale\":{\"type\":\"linear\",\"mode\":\"normal\"},\"labels\":{\"show\":true,\"rotate\":0,\"filter\":false,\"truncate\":100},\"title\":{\"text\":\"Query Count\"}}],\"seriesParams\":[{\"show\":\"t...

  }

  public void testContains_wrongType() {
    try {
      assertFalse(
          "contains(wrongType) should return false or throw", collection.contains(WrongType.VALUE));
    } catch (ClassCastException tolerated) {
    }
  }

Remember that when you import `Query`, `Path`, and others from `fastapi`, those are actually functions that return special classes.

///

/// tip

Notice how each model's attribute with a type, default value and `Field` has the same structure as a *path operation function's* parameter, with `Field` instead of `Path`, `Query` and `Body`.

///

## Add extra information