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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def format_file_url_params(file_urls):
        '''
            Utility method for formatting file URL parameters for transmission
        '''
        file_urls_payload = {}
        if file_urls:
            for idx, fileurl in enumerate(file_urls):
                file_urls_payload["file_url[" + str(idx) + "]"] = fileurl
        return file_urls_payload