I'm trying to figure out how I can tell, looking at the metadata on a FeatureLayer (or a FeatureServer or MapServer), how recently the data for that asset has changed, like an "updated_at" field. I know some FeatureLayers after version 10 have an "editFieldsInfo" with a possible "editDateField" that can indicate the last time a particular feature changed, but is there anything else that can indicate that on the asset as a whole?
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