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<http://schema.org/item>
"https://developers.google.cn/adwords/api/docs/reference/v201809/CampaignBidModifierService.CampaignBidModifierOperation"
<https://developers.google.cn/adwords/api/docs/reference/v201809/CampaignBidModifierService.CampaignBidModifierOperation?hl=ru>