def serialize(self,writer: SerializationWriter) -> None:
        """
        Serializes information the current object
        param writer: Serialization writer to use to serialize this model
        Returns: None
        """
        if writer is None:
            raise TypeError("writer cannot be null.")
        writer.write_str_value("destinationFileName", self.destination_file_name)
        writer.write_object_value("sourceFile", self.source_file)
        writer.write_additional_data_value(self.additional_data)

        Serializes information the current object
        param writer: Serialization writer to use to serialize this model
        Returns: None
        
msgraph/generated/sites/item/lists/item/content_types/item/copy_to_default_content_location/copy_to_default_content_location_post_request_body.py