Can I pass a file into a function?

I have a function from a 3rd party plugin that uploads data using a CSV. The beginning of the function in the resource model that does the work looks like this

public function uploadAndImport(MagentoFrameworkDataObject $object)
    {
        try {
             ...

I want to call this function using a cron job (which is already set up), and call this with a csv every 15 minutes. How can I pass the csv to this function?

This is what my cron job looks like now

<?php

namespace companyImportCustomerpricingCron;

use MagentoFrameworkAppObjectManager;
use PsrLogLoggerInterface;
use MagedelightCustomerpriceModelResourceModelCustomerprice;

class ImportPricing {
    protected $logger;

    protected $customerprice;

    public function __construct(LoggerInterface $logger, Customerprice $customerprice) {
        $this->logger = $logger;
        $this->customerprice = $customerprice;
    }

    /**
     * Write to system.log
     *
     * @return void
     * @throws MagentoFrameworkExceptionLocalizedException
     */
    public function execute() {
        //$this->logger->info('Cron Works');

        $this->customerprice->uploadAndImport();
    }
}