* Numbers (`int`, `float`) with min and max values, etc.

* Validation for more exotic types, like:
    * URL.
    * Email.
    * UUID.
    * ...and others.

All the validation is handled by the well-established and robust **Pydantic**.

### Security and authentication { #security-and-authentication }

Security and authentication integrated. Without any compromise with databases or data models.

There are many situations in which you need to notify an error to a client that is using your API.

This client could be a browser with a frontend, a code from someone else, an IoT device, etc.

You could need to tell the client that:

* The client doesn't have enough privileges for that operation.
* The client doesn't have access to that resource.
* The item the client was trying to access doesn't exist.
* etc.

		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrMalformedXML: {
		Code:           "MalformedXML",
		Description:    "The XML you provided was not well-formed or did not validate against our published schema.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrMissingContentLength: {
		Code:           "MissingContentLength",

      val pkcs8Bytes =
        pkcs8Base64Text.decodeBase64()
          ?: throw IllegalArgumentException("failed to decode private key")

      // The private key doesn't tell us its type but it's okay because the certificate knows!
      val keyType =
        when (certificate.publicKey) {
          is ECPublicKey -> "EC"
          is RSAPublicKey -> "RSA"

 * <i>unsigned</i> (that is, any negative value {@code x} is treated as the positive value {@code
 * 2^64 + x}). The methods for which signedness is not an issue are in {@link Longs}, as well as
 * signed versions of methods for which signedness is an issue.
 *
 * <p>In addition, this class provides several static methods for converting a {@code long} to a

    assertThrows(IllegalArgumentException.class, () -> ImmutableLongArray.builder(-1));
  }

  /**
   * If there's a bug in builder growth, we wouldn't know how to expose it. So, brute force the hell
   * out of it for a while and see what happens.
   */
  public void testBuilder_bruteForce() {
    for (int i = 0; i < reduceIterationsIfGwt(100); i++) {

	errLifecycleDuplicateID  = Errorf("Rule ID must be unique. Found same ID for more than one rule")
	errXMLNotWellFormed      = Errorf("The XML you provided was not well-formed or did not validate against our published schema")
	errLifecycleBucketLocked = Errorf("ExpiredObjectAllVersions element and DelMarkerExpiration action cannot be used on an object locked bucket")
)

const (

      HashCode that = (HashCode) object;
      return bits() == that.bits() && equalsSameBits(that);
    }
    return false;
  }

  /**
   * Returns a "Java hash code" for this {@code HashCode} instance; this is well-defined (so, for
   * example, you can safely put {@code HashCode} instances into a {@code HashSet}) but is otherwise
   * probably not what you want to use.
   */
  @Override
  public final int hashCode() {

 * ServerSocket} is closed even if the {@code MyServer} object is garbage-collected without calling
 * its {@code close} method. You could use a finalizer to accomplish this, but that has a
 * number of well-known problems. Here is how you might use this class instead:
 *
 * {@snippet :
 * public class MyServer implements Closeable {
 *   private static final FinalizableReferenceQueue frq = new FinalizableReferenceQueue();

            <id>default-compile</id>
            <configuration>
              <excludes>
                <!-- Yes, we want to exclude ForceGuavaCompilation 4 times: -->
                <!-- (And we might as well exclude DummyJavadocClass 3 times (though it would be harmless to include).) -->
                <!-- 1. Don't compile it (since that requires a *non-test* dep on gwt-user. -->