Value used when unset.
In this case, server behavior defaults to
[RECOMMENDATIONS_FILTERING_DISABLED][google.cloud.retail.v2.RecommendationsFilteringOption.RECOMMENDATIONS_FILTERING_DISABLED].
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-12-04 UTC."],[],[]]