the copyright owner. For the purposes of this definition, "submitted"
      means any form of electronic, verbal, or written communication sent
      to the Licensor or its representatives, including but not limited to
      communication on electronic mailing lists, source code control systems,
      and issue tracking systems that are managed by, or on behalf of, the

<?xml version="1.0" encoding="UTF-8"?>
<metadata>
  <groupId>org.apache.maven.its</groupId>
  <artifactId>b</artifactId>
  <version>0.1</version>
  <versioning>
    <versions>
      <version>0.1</version>
    </versions>
    <lastUpdated>20091023222817</lastUpdated>
  </versioning>

/**
 * Describes a problem that was encountered during model building. A problem can either be an exception that was thrown
 * or a simple string message. In addition, a problem carries a hint about its source, e.g. the POM file that exhibits
 * the problem.
 *
 */
public interface ModelProblem extends BuilderProblem {

    /**
     * Enumeration of model versions that can be validated.

<?xml version="1.0" encoding="UTF-8"?><metadata>
  <groupId>org.apache.maven.its.mng3906</groupId>
  <artifactId>b</artifactId>
  <version>0.1</version>
  <versioning>
    <release>0.1</release>
    <versions>
      <version>0.1</version>
    </versions>
    <lastUpdated>20081214111129</lastUpdated>
  </versioning>

<?xml version="1.0" encoding="UTF-8"?><metadata>
  <groupId>org.apache.maven.its.mng3906</groupId>
  <artifactId>e</artifactId>
  <version>0.1</version>
  <versioning>
    <release>0.1</release>
    <versions>
      <version>0.1</version>
    </versions>
    <lastUpdated>20081214111155</lastUpdated>
  </versioning>

<?xml version="1.0" encoding="UTF-8"?>
<metadata>
  <groupId>org.apache.maven.its</groupId>
  <artifactId>a</artifactId>
  <version>0.1</version>
  <versioning>
    <versions>
      <version>0.1</version>
    </versions>
    <lastUpdated>20091023222756</lastUpdated>
  </versioning>

<?xml version="1.0" encoding="UTF-8"?>
<metadata>
  <groupId>org.apache.maven.its</groupId>
  <artifactId>a</artifactId>
  <version>0.1</version>
  <versioning>
    <versions>
      <version>0.1</version>
    </versions>
    <lastUpdated>20091023222756</lastUpdated>
  </versioning>

<?xml version="1.0" encoding="UTF-8"?><metadata>
  <groupId>org.apache.maven.its.mng3906</groupId>
  <artifactId>a</artifactId>
  <version>0.1</version>
  <versioning>
    <release>0.2</release>
    <versions>
      <version>0.1</version>
      <version>0.2</version>
    </versions>
    <lastUpdated>20081214111115</lastUpdated>
  </versioning>

        return iterator.hasNext();
      }

      @Override
      @ParametricNullness
      public T next() {
        return iterator.next();
      }
    };
  }

  /**
   * Simply returns its argument.
   *
   * @deprecated no need to use this
   * @since 10.0
   */
  @InlineMe(
      replacement = "checkNotNull(iterator)",
      staticImports = "com.google.common.base.Preconditions.checkNotNull")

# `APIRouter` class

Here's the reference information for the `APIRouter` class, with all its parameters, attributes and methods.

You can import the `APIRouter` class directly from `fastapi`:

```python
from fastapi import APIRouter
```

::: fastapi.APIRouter
    options:
        members:
            - websocket
            - include_router
            - get
            - put
            - post
            - delete