"format": "email",
                        },
                        "full_name": {
                            "title": "Full Name",
                            "anyOf": [{"type": "string"}, {"type": "null"}],
                        },
                    },
                },
                "UserOut": {
                    "title": "UserOut",

            assertTrue(result);
            assertFalse(echoResponse.isVerifyFailed());
            verify(mockDigest, never()).verify(any(), anyInt(), anyInt(), anyInt(), any());
        }
    }

    @Nested
    @DisplayName("Credit Management Tests")
    class CreditManagementTests {

        @Test

                        "type": "object",
                        "properties": {
                            "file": {
                                "title": "File",
                                "anyOf": [
                                    {"type": "string", "format": "binary"},
                                    {"type": "null"},
                                ],
                            }

import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.nio.charset.StandardCharsets;

        when(mockAndxCommand.getCommand()).thenReturn(0x42);
        when(mockAndxCommand.writeParameterWordsWireFormat(any(byte[].class), anyInt())).thenReturn(10);
        when(mockAndxCommand.writeBytesWireFormat(any(byte[].class), anyInt())).thenReturn(20);

        testBlock = new TestAndXServerMessageBlock(mockConfig, (byte) 0x25, mockAndxCommand) {
            @Override

But you can disable it by setting `syntaxHighlight` to `False`:

{* ../../docs_src/configure_swagger_ui/tutorial001_py39.py hl[3] *}

...and then Swagger UI won't show the syntax highlighting anymore:

<img src="/img/tutorial/extending-openapi/image03.png">

## Change the Theme { #change-the-theme }

import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.lang.reflect.Field;

import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;

# Without aliases


@app.get("/optional-str")
async def read_optional_str(p: Annotated[Optional[str], Cookie()] = None):
    return {"p": p}


class CookieModelOptionalStr(BaseModel):
    p: Optional[str] = None


@app.get("/model-optional-str")
async def read_model_optional_str(p: Annotated[CookieModelOptionalStr, Cookie()]):
    return {"p": p.p}

class FooBaseModel(BaseModel):
    model_config = ConfigDict(extra="forbid")


class Foo(FooBaseModel):
    pass


app = FastAPI()


@app.post("/")
async def post(
    foo: Union[Foo, None] = None,
):
    return foo


client = TestClient(app)


def test_call_invalid():
    response = client.post("/", json={"foo": {"bar": "baz"}})
    assert response.status_code == 422