*/
    boolean is(String propertyKey);

    /**
     * Get the value for the key 'lasta_di.smart.deploy.mode'. <br>
     * The value is, e.g. warm <br>
     * comment: The mode of Lasta Di's smart-deploy, should be cool in production (e.g. hot, cool, warm)
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */

```Python hl_lines="3  5-6"
{
    "name": "Baz",
    "description": None,
    "price": 50.2,
    "tax": 10.5,
    "tags": []
}
```

FastAPI is smart enough (actually, Pydantic is smart enough) to realize that, even though `description`, `tax`, and `tags` have the same values as the defaults, they were set explicitly (instead of taken from the defaults).

{* ../../docs_src/query_params/tutorial002_py310.py hl[7] *}

In this case, the function parameter `q` will be optional, and will be `None` by default.

/// check

Also notice that **FastAPI** is smart enough to notice that the path parameter `item_id` is a path parameter and `q` is not, so, it's a query parameter.

///

## Query parameter type conversion { #query-parameter-type-conversion }

## Key Features

- **Smart Query Suggestions**: Real-time auto-completion and search suggestions
- **Multi-language Support**: Built-in support for Japanese text processing with Kuromoji analyzer

        super.setUp();
        fessEnv = new FessEnv.SimpleImpl();
    }

    // Test constant field values
    public void xtest_constantFields() {
        assertEquals("lasta_di.smart.deploy.mode", FessEnv.lasta_di_SMART_DEPLOY_MODE);
        assertEquals("development.here", FessEnv.DEVELOPMENT_HERE);
        assertEquals("environment.title", FessEnv.ENVIRONMENT_TITLE);

    public static final int ACB_AUTOLOCK = 1024;
    /** Account control bit flag: Encrypted text password is allowed */
    public static final int ACB_ENC_TXT_PWD_ALLOWED = 2048;
    /** Account control bit flag: Smart card is required for login */
    public static final int ACB_SMARTCARD_REQUIRED = 4096;
    /** Account control bit flag: Account is trusted for delegation */
    public static final int ACB_TRUSTED_FOR_DELEGATION = 8192;

    public static final int ACB_AUTOLOCK = 1024;
    /** Account control bit flag: Encrypted text password is allowed */
    public static final int ACB_ENC_TXT_PWD_ALLOWED = 2048;
    /** Account control bit flag: Smart card is required for login */
    public static final int ACB_SMARTCARD_REQUIRED = 4096;
    /** Account control bit flag: Account is trusted for delegation */
    public static final int ACB_TRUSTED_FOR_DELEGATION = 8192;

import org.lastaflute.di.core.exception.AutoBindingFailureException;
import org.lastaflute.di.core.exception.ComponentNotFoundException;
import org.lastaflute.di.core.factory.SingletonLaContainerFactory;
import org.lastaflute.di.core.smart.hot.HotdeployUtil;
import org.lastaflute.job.JobManager;
import org.lastaflute.web.servlet.request.RequestManager;
import org.lastaflute.web.servlet.request.ResponseManager;

/**

     * happy!) However, since we didn't do that for many years, we're not about to start now.
     * (Runtime checks could be particularly bad for users of LegacyConverter.)
     *
     * Luckily, our nullness checker is smart enough to realize that `convert` has @PolyNull-like
     * behavior, so it knows that `convert(a)` returns a non-nullable value, and we don't need to

                 * behavior is undefined because of the concurrent mutation.)
                 *
                 * (Our prototype checker happens to be "smart" enough to understand this for the
                 * *get* call in getValue but not for the *put* call here.)
                 *
                 * (Arguably we should use requireNonNull rather than uncheckedCastNullableTToT: We