This example creates a standard shopping campaign, a shopping product ad group and a shopping product ad.
Prerequisite: You need to have access to a Merchant Center account. You can find instructions to create a Merchant Center account here: https://support.google.com/merchants/answer/188924 This account must be linked to your Google Ads account.
-help Show the help message. -customer_id The Google Ads customer ID. -merchant_center_id The Merchant Center ID. -create_default_listing_group [optional] Create default listing group.