def METHOD_NAME(input_: pyows_types.Input) -> Any:
    if isinstance(input_.data, pyows_types.Data):
        data_value = input_.data.value
        # TODO: use pattern matching as soon as we can require python 3.10
        if isinstance(data_value, pyows_types.LiteralValue):
            return data_value.value
        elif isinstance(data_value, pyows_common_types.BoundingBox):
            return BoundingBox(
                bbox=(data_value.bbox[:2], data_value.bbox[2:]),
                crs=data_value.crs,
            )
        else:
            # not a common type, process needs to handle it on its own
            return data_value
    else:
        raise OperationNotSupportedError("References as input are not implemented")