* which a POM was read.
     *
     * @return The hint about the source of the problem or an empty string if unknown, never {@code null}.
     */
    String getSource();

    /**
     * Gets the one-based index of the line containing the problem. The line number should refer to some text file that
     * is given by {@link #getSource()}.
     *

        // Recursively discover modules
        discoverModules(startDirectory, rootPom, pomMap);

        return pomMap;
    }

    /**
     * Loads a POM file as a domtrip Document.
     *
     * @param pomPath the path to the POM file
     * @return the parsed Document
     * @throws IOException if there's an error reading the file
     * @throws DomTripException if there's an error parsing the XML

                retVal = tokBuf.toString();
            }
        }

        return optional ? "?" + retVal : retVal;
    }

    public static String substVars(
            String value, String name, Map<String, String> props, UnaryOperator<String> callback) {
        return DefaultInterpolator.substVars(value, name, null, props, callback, null, false);
    }

 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   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

 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   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

例えば、クライアントがクエリパラメータ `tool` に、値 `plumbus` を設定して送ろうとすると:

```http
https://example.com/items/?limit=10&tool=plumbus
```

クエリパラメータ `tool` が許可されていないことを通知する**エラー**レスポンスが返されます。

```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["query", "tool"],
            "msg": "Extra inputs are not permitted",
            "input": "plumbus"
        }
    ]
}
```

例如，如果客户端尝试发送一个值为 `good-list-please` 的 `santa_tracker` cookie，客户端将收到一个**错误**响应，告知他们 `santa_tracker` <abbr title="圣诞老人（Santa）不赞成没有小饼干（cookie）。🎅 好吧，不会再开 cookie 的玩笑了。">cookie 是不允许的</abbr>：

```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["cookie", "santa_tracker"],
            "msg": "Extra inputs are not permitted",
            "input": "good-list-please",
        }
    ]
}

      new CacheLoader<Key, String>() {
        @Override
        public String load(Key key) {
          return key.toString();
        }
      };

  private CacheBuilderFactory factoryWithAllKeyStrengths() {
    return new CacheBuilderFactory()
        .withKeyStrengths(ImmutableSet.of(STRONG, Strength.WEAK))

/*
 * Copyright (C) 2014 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 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,

/*
 * Copyright (C) 2019 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 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,