/**
     * Returns the path to an alternate POM file.
     *
     * @return an {@link Optional} containing the path to the alternate POM file, or empty if not specified
     */
    @Nonnull
    Optional<String> alternatePomFile();

    /**
     * Indicates whether Maven should operate in offline mode.
     *

        log(Level.DEBUG, message, error);
    }

    /**
     * Logs an info message without an associated exception.
     *
     * @param message the info message to be logged
     */
    default void info(@Nonnull String message) {
        log(Level.INFO, message);
    }

    /**
     * Logs an info message with an associated exception.
     *
     * @param message the info message to be logged

  /** Returns an iterable whose iterator returns the given elements in order. */
  public static <E extends @Nullable Object> MinimalIterable<E> of(E... elements) {
    // Make sure to get an unmodifiable iterator
    return new MinimalIterable<>(asList(elements).iterator());
  }

  /**
   * Returns an iterable whose iterator returns the given elements in order. The elements are copied

## An app with callbacks

Let's see all this with an example.

Imagine you develop an app that allows creating invoices.

These invoices will have an `id`, `title` (optional), `customer`, and `total`.

The user of your API (an external developer) will create an invoice in your API with a POST request.

Then your API will (let's imagine):

#### Identity information 

This is an inappropriate use of lazy types:

```groovy
class Example {
    Provider<String> getPath() {
        return project.provider(() -> path)
    }
}
```

Like above, this is an immutable part of the identity of the domain object and cannot be changed.

### Properties in entirely new classes

   * IllegalArgumentException} if passed a {@code fromKey} less than an earlier {@code fromKey}.
   * However, this method doesn't throw an exception in that situation, but instead keeps the
   * original {@code fromKey}. Similarly, this method keeps the original {@code toKey}, instead of
   * throwing an exception, if passed a {@code toKey} greater than an earlier {@code toKey}.
   */
  @Override

///

We can also use this same approach to access the request body in an exception handler.

All we need to do is handle the request inside a `try`/`except` block:

{* ../../docs_src/custom_request_and_route/tutorial002.py hl[13,15] *}

If an exception occurs, the`Request` instance will still be in scope, so we can read and make use of the request body when handling the error:

                project.getGroupId(), project.getArtifactId(), project.getVersion(), ext);
        attachArtifact(project, artifact, path);
    }

    /**
     * Attaches an artifact to the project with an explicitly specified type.
     *
     * @param session the current build session
     * @param project the project to attach the artifact to

      }
      final Class<?> returnType = method.getReturnType();
      assertTrue(
          rootLocaleFormat("%s.%s() must return an array.", annotationClass, propertyName),
          returnType.isArray());
      assertSame(
          rootLocaleFormat(
              "%s.%s() must return an array of %s.",
              annotationClass, propertyName, annotationClass.getDeclaringClass()),
          annotationClass.getDeclaringClass(),

 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */