t.Fatalf("no error should happen when migrate scanner, valuer struct, got error %v", err)
	}

	data := ScannerValuerStruct{
		Name:     sql.NullString{String: "name", Valid: true},
		Gender:   &sql.NullString{String: "M", Valid: true},
		Age:      sql.NullInt64{Int64: 18, Valid: true},
		Male:     sql.NullBool{Bool: true, Valid: true},
		Height:   sql.NullFloat64{Float64: 1.8888, Valid: true},

      }
    }
  }

  private enum Gender {
    MALE,
    FEMALE
  }

  private static class AllDefaultValuesChecker extends DefaultValueChecker {

    @SuppressWarnings("unused") // called by NullPointerTester
    @Keep
    public void checkDefaultValuesForTheseTypes(
        Gender gender,
        Integer integer,
        int i,
        String string,

Но внутреннее устройство **конкурентности** и **параллелизма** довольно разное.

Чтобы это понять, представьте такую картину:

### Конкурентные бургеры

<!-- The gender neutral cook emoji "🧑‍🍳" does not render well in browsers. In the meantime, I'm using a mix of male "👨‍🍳" and female "👩‍🍳" cooks. -->

render.svg...

render-banner.svg...

### Typannotationen und Tooling

Sehen wir uns zunächst an, wie Editor, mypy und andere Tools dies sehen würden.

`BaseUser` verfügt über die Basis-Felder. Dann erbt `UserIn` von `BaseUser` und fügt das Feld `Passwort` hinzu, sodass dass es nun alle Felder beider Modelle hat.

Wir annotieren den Funktionsrückgabetyp als `BaseUser`, geben aber tatsächlich eine `UserIn`-Instanz zurück.

    }

    /**
     * Register roles and labels.
     * @param data The render data.
     */
    protected void registerRolesAndLabels(final RenderData data) {
        RenderDataUtil.register(data, "roleTypeItems", roleTypeService.getRoleTypeList());
    }

    /**
     * Register handler names.
     * @param data The render data.
     */
    protected void registerHandlerNames(final RenderData data) {

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<style>
.md-content .md-typeset h1 { display: none; }
</style>

<p align="center">
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</p>
<p align="center">
    FastAPI Framework, hochperformant, leicht zu erlernen, schnell zu programmieren, einsatzbereit
</p>
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 *
 * Licensed under the Apache License, Version 2.0 (the "License");
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