name = get_validation_alias(param)
            convert_underscores = getattr(
                param.field_info,
                "convert_underscores",
                default_convert_underscores,
            )
            if (
                param_type == ParamTypes.header
                and name == param.name
                and convert_underscores
            ):

            # doesn't have a FieldInfo of type Header with the default convert_underscores=True
            convert_underscores = getattr(
                field.field_info, "convert_underscores", default_convert_underscores
            )
            if convert_underscores:
                alias = get_validation_alias(field)
                if alias == field.name:

        include_in_schema: bool = True,
        json_schema_extra: Union[dict[str, Any], None] = None,
        **extra: Any,
    ):
        self.convert_underscores = convert_underscores
        super().__init__(
            default=default,
            default_factory=default_factory,
            annotation=annotation,
            alias=alias,