"msg": "Extra inputs are not permitted",
            "input": "plumbus",
        }
    ]
}
```

## Disable Convert Underscores { #disable-convert-underscores }

The same way as with regular header parameters, when you have underscore characters in the parameter names, they are **automatically converted to hyphens**.

If for some reason you need to disable automatic conversion of underscores to hyphens, set the parameter `convert_underscores` of `Header` to `False`:

{* ../../docs_src/header_params/tutorial002_an_py310.py hl[10] *}

/// warning

Before setting `convert_underscores` to `False`, bear in mind that some HTTP proxies and servers disallow the usage of headers with underscores.

///

## Duplicate headers { #duplicate-headers }

            "loc": ["header", "tool"],
            "msg": "Extra inputs are not permitted",
            "input": "plumbus",
        }
    ]
}
```

## Desativar conversão de underscores { #disable-convert-underscores }

Da mesma forma que com parâmetros de cabeçalho normais, quando você tem caracteres de sublinhado nos nomes dos parâmetros, eles são **automaticamente convertidos em hifens**.

            "msg": "Extra inputs are not permitted",
            "input": "plumbus",
        }
    ]
}
```

## Как отключить автоматическое преобразование подчеркиваний { #disable-convert-underscores }

Как и в случае с обычными заголовками, если у вас в именах параметров имеются символы подчеркивания, они **автоматически преобразовываются в дефис**.

            "msg": "Extra inputs are not permitted",
            "input": "plumbus",
        }
    ]
}
```

## Automatische Umwandlung von Unterstrichen deaktivieren { #disable-convert-underscores }

Ähnlich wie bei regulären Header-Parametern werden bei der Verwendung von Unterstrichen in den Parameternamen diese **automatisch in Bindestriche umgewandelt**.

            "loc": ["header", "tool"],
            "msg": "Extra inputs are not permitted",
            "input": "plumbus",
        }
    ]
}
```

## Desactivar la conversión de guiones bajos { #disable-convert-underscores }

De la misma forma que con los parámetros de header normales, cuando tienes caracteres de guion bajo en los nombres de los parámetros, se **convierten automáticamente en guiones**.

  static class EmptyTest {}

  static class EmptyTests {}

  static class EmptyTestSuite {}

  static class Foo {}

  @SuppressWarnings("IdentifierName") // We're testing that we ignore classes with underscores.
  static class Foo_Bar {}

  public static class PublicFoo {}

  static class FooTest {
    @SuppressWarnings("unused") // accessed reflectively
    public void testPublic() {}

     * <p>ASCII characters in the part are expected to be valid per RFC 1035, with underscore also
     * being allowed due to widespread practice.
     */

    String asciiChars = CharMatcher.ascii().retainFrom(part);

    if (!PART_CHAR_MATCHER.matchesAllOf(asciiChars)) {
      return false;
    }

    // No initial or final dashes or underscores.

    if (DASH_MATCHER.matches(part.charAt(0))

        Files.writeString(specialDir.resolve("file-with-dashes.txt"), "dashes");
        Files.writeString(specialDir.resolve("file_with_underscores.txt"), "underscores");
        Files.writeString(specialDir.resolve("file.multiple.dots.txt"), "dots");

        // Setup deeply nested directories
        Path currentDir = deepDir;
        for (int i = 1; i <= 5; i++) {

        this.logLevel = logLevel;
        return this;
    }

    /**
     * Sets the log suffix for this job execution.
     * The suffix is trimmed and whitespace is replaced with underscores.
     *
     * @param logSuffix the suffix to append to log file names
     * @return this ExecJob instance for method chaining
     */
    public ExecJob logSuffix(final String logSuffix) {