nameProperty.setValue(bean, "John Doe");

// Bean copying with flexible options
BeanUtil.copyBeanToBean(source, destination);
BeanUtil.copyBeanToBean(source, destination, options -> 
    options.exclude("password", "internalId"));

// Convert between beans and maps
Map<String, Object> map = BeanUtil.copyBeanToNewMap(bean);
MyBean newBean = BeanUtil.copyMapToNewBean(map, MyBean.class);
```

### Type Conversion
```java

using them to decorate a function with a single `yield`.

That's what **FastAPI** uses internally for dependencies with `yield`.

But you don't have to use the decorators for FastAPI dependencies (and you shouldn't).

FastAPI will do it for you internally.

Extra metadata maintained internally in `xl.meta` for a transitioned object

```
...
        "MetaSys": {
          "x-minio-internal-transition-status": "Y29tcGxldGU=",
          "x-minio-internal-transition-tier": "R0NTVElFUjE=",

The `name="static"` gives it a name that can be used internally by **FastAPI**.

All these parameters can be different than "`static`", adjust them with the needs and specific details of your own application.

## More info { #more-info }

import okhttp3.OkHttpClient
import okhttp3.Protocol
import okhttp3.internal.publicsuffix.PublicSuffixDatabase
import okhttp3.internal.readFieldOrNull
import okhttp3.internal.tls.BasicCertificateChainCleaner
import okhttp3.internal.tls.BasicTrustRootIndex
import okhttp3.internal.tls.CertificateChainCleaner
import okhttp3.internal.tls.TrustRootIndex
import okio.Buffer
import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement

* The same with `app/routers/users.py`, it's another submodule: `app.routers.users`.
* There's also a subdirectory `app/internal/` with another file `__init__.py`, so it's another "Python subpackage": `app.internal`.
* And the file `app/internal/admin.py` is another submodule: `app.internal.admin`.

<img src="/img/tutorial/bigger-applications/package.drawio.svg">

The same file structure with comments:

```
.

    }

    // Uses reflection to set internal array to null to exercise defensive branch in length()
    @Test
    @DisplayName("length(): handles internal null defensively")
    void length_handlesNullInternalArray() throws Exception {
        // Arrange
        SecurityBlob blob = new SecurityBlob(new byte[] { 1, 2, 3 });

        // Force internal field to null via reflection to exercise defensive branch

    }

    /**
     * Fetch a private field value via reflection.  This helper keeps the
     * test code tidy and is used where unit‑testing logic relies on
     * internally stored data.
     */
    private static Object getPrivateField(Object target, String name) {
        try {
            java.lang.reflect.Field f = target.getClass().getDeclaredField(name);

* HAProxy
    * With an external component like Certbot for certificate renewals
* Kubernetes with an Ingress Controller like Nginx
    * With an external component like cert-manager for certificate renewals
* Handled internally by a cloud provider as part of their services (read below 👇)

        this(tc, "", "", "");
    }

    /**
     * Create an {@code NtlmPasswordAuthentication} object from the userinfo
     * component of an SMB URL like "{@code domain;user:pass}". This constructor
     * is used internally be jCIFS when parsing SMB URLs.
     *
     * @param tc the CIFS context to use
     * @param userInfo the user information string in the format "domain;user:pass"
     */