json_schema_extra: Union[dict[str, Any], None] = None,
        **extra: Any,
    ):
        assert default is ..., "Path parameters cannot have a default value"
        self.in_ = self.in_
        super().__init__(
            default=default,
            default_factory=default_factory,
            annotation=annotation,
            alias=alias,
            alias_priority=alias_priority,

    if field_info is not None:
        # Handle field_info.in_
        if is_path_param:
            assert isinstance(field_info, params.Path), (
                f"Cannot use `{field_info.__class__.__name__}` for path param"
                f" {param_name!r}"
            )
        elif (
            isinstance(field_info, params.Param)
            and getattr(field_info, "in_", None) is None
        ):

    # Serialization rules for more complex scenarios
    content: Optional[dict[str, MediaType]] = None


class Parameter(ParameterBase):
    name: str
    in_: ParameterInType = Field(alias="in")


class Header(ParameterBase):
    pass


class RequestBody(BaseModelWithConfig):
    description: Optional[str] = None
    content: dict[str, MediaType]