// 127.0.0.1 is configured as a trusted proxy by default
        final MockletHttpServletRequest request = getMockRequest();
        request.setRemoteAddr("127.0.0.1");
        request.addHeader("X-Real-IP", "203.0.113.75");
        assertEquals("203.0.113.75", rateLimitHelper.getClientIp(request));
    }

    @Test
    public void test_getClientIp_xForwardedForPriority_trustedProxy() {

3. **Actively collaborate with us.** We commit real time and attention to everything we review. Low-effort submissions—where code is generated, submitted, and abandoned—waste our limited review capacity.

## What contributors can expect from us

// floating-point values. The real and imaginary parts must be of the same
// size, either float32 or float64 (or assignable to them), and the return
// value will be the corresponding complex type (complex64 for float32,
// complex128 for float64).
func complex(r, i FloatType) ComplexType

// The real built-in function returns the real part of the complex number c.

///

Lo único nuevo es `callbacks=invoices_callback_router.routes` como un argumento para el *decorador de path operation*. Veremos qué es eso a continuación.

## Documentar el callback { #documenting-the-callback }

El código real del callback dependerá mucho de tu propia aplicación API.

Y probablemente variará mucho de una aplicación a otra.

Podría ser solo una o dos líneas de código, como:

```Python

        description="Here's a longer description of the custom **OpenAPI** schema",
        routes=app.routes,
    )
    openapi_schema["info"]["x-logo"] = {
        "url": "https://fastapi.tiangolo.com/img/logo-margin/logo-teal.png"
    }
    app.openapi_schema = openapi_schema
    return app.openapi_schema

                return clientIp;
            }
            final String xRealIp = request.getHeader("X-Real-IP");
            if (StringUtil.isNotBlank(xRealIp)) {
                final String clientIp = xRealIp.trim();
                if (logger.isDebugEnabled()) {
                    logger.debug("Client IP from X-Real-IP: clientIp={}, remoteAddr={}", clientIp, remoteAddr);
                }
                return clientIp;

///

A única novidade é o `callbacks=invoices_callback_router.routes` como argumento do decorador da *operação de rota*. Veremos o que é isso a seguir.

## Documentando o callback { #documenting-the-callback }

O código real do callback dependerá muito da sua própria aplicação de API.

E provavelmente variará muito de um aplicativo para o outro.

Poderia ser apenas uma ou duas linhas de código, como:

```Python

            capturedOption.set(option);
            return null;
        });

        final ApiAdminSchedulerAction action = createActionWithMockService(scheduledJob);

        // Execute the real put$start() method
        final JsonResponse<ApiResult> jsonResponse = action.put$start("job-1");

        // Verify: response contains non-null jobLogId
        assertNotNull(jsonResponse);

                case "test.property":
                    return "config-value";
                case "filter.null":
                    // This would be filtered to null by PropertyFilter in real scenario
                    throw new ConfigPropertyNotFoundException("filter.null");
                default:
                    throw new ConfigPropertyNotFoundException(propertyKey);
                }
            }

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