filter property

Specifies the filters for the promotion results.

The syntax is defined in https://google.aip.dev/160 with the following caveats: 1. Only the following features are supported: - Logical operator AND - Comparison operator = (no wildcards *) - Traversal operator . - Has operator : (no wildcards *) 2. Only the following fields are supported: - applicableProducts - regionCodes - youtubePayload.partnerEligibilityId - youtubePayload.postalCode 3. Unless explicitly mentioned above, other features are not supported. Example: applicableProducts:partners/partner1/products/product1 AND regionCodes:US AND youtubePayload.postalCode=94043 AND youtubePayload.partnerEligibilityId=eligibility-id

Optional.